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    Strengthening health systems

    in Asia and the Pacifc through

    beer evidence and pracce

    For the PDF version of

    this paper and other

    related documents, visit

    www.uq.edu.au/hishub

    Theme: Building health informaon systems

    Working Paper Series Number 5 November 2009 WORKING PAPER

    Improving the quality and useof health informaon systems:essenal strategic issues

    Health Informaons System Knowledge Hub

    Instute for Health Metrics and Evaluaon

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    Contents

    Acronyms and abbreviaons ................................................................................................................... 2

    Introducon............................................................................................................................................. 3

    Recent developments in strengthening health informaon systems ..................................................... 4

    The health informaon system as a stascal tool ................................................................................. 7

    Health data sources ................................................................................................................................. 9

    Conclusion .............................................................................................................................................. 14

    References .............................................................................................................................................. 15

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    Acronyms and abbreviaons

    DHS demographic and health surveysHMN Health Metrics Network

    ICD-10 Internaonal Stascal Classicaon of Diseases and Related Health Problems,10th revision

    MDG Millennium Development Goal

    RHINO Roune Health Informaon Systems

    WHO World Health Organizaon

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    The paper is intended to provide a succinct overview

    of issues that countries and the donor community

    might wish to consider when developing strategies

    and pracces to improve the quality and use of

    health informaon.

    This paper sets out some of the crical issues that

    countries and donors should consider when invesng in

    the development of health informaon systems. These

    range from incenves and pracces to improve the

    quality and, especially, the use of health informaon by

    those in policy who have the greatest need for reliable,

    mely and relevant health informaon for planning, to

    strategies to create a culture of informaon demand

    and use. Experiences from countries such as Mexico and

    Brazil have been analysed to draw aenon to pracces

    that might be protably adopted elsewhere, parcularly

    in the AsiaPacic region. The paper includes a cursory

    overview of internaonal iniaves in health informaon

    strengthening. It also reviews the crical role of various

    health data sources in supporng indicator development

    for the monitoring and evaluaon of health status and

    health program eecveness. The paper is intended

    to provide a succinct overview of issues that countries

    and the donor community might wish to consider when

    developing strategies and pracces to improve the

    quality and use of health informaon.

    Introducon

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    to produce high quality primary data and to make this

    data available for measurement purposes. Data are a

    rst step, but quality data is the real aim. The glossary

    for evidence based public health (Rychetnik et al. 2004)

    denes data quality as, the degree to which data items

    are accurate, complete, relevant, mely, suciently

    detailed, appropriately represented (e.g. consistently

    coded using a clinical coding system) and retain sucient

    contextual informaon to support decision making.

    These characteriscs that dene data quality should be

    taken as principles for any health metrics eort, and at

    the same me, serve as a challenge for HIS.

    Incenvising quality and use

    For a typical health informaon system in a developing

    country, it is not easy to achieve data quality. Frequently,

    health data in developing countries are incomplete

    they either miss a poron of the populaon or do

    not cover all relevant aspects of health. This is oen

    through no fault of their own; they simply do not have

    the resources needed to achieve a comprehensive

    system instantaneously, but they can denitely work to

    improve what they have. There is also somemes a lack

    of support from the supply perspecve for improvingdata quality. There are few incenves to correct the

    crude data gathered for the health informaon system

    at a naonal or district level. This generates a perverse

    cycle in which decision-makers reacng to the quality

    problems in the data exclude those data from their

    decision-making. In turn, providers of data choose not

    to invest in improvements because nobody is consuming

    their products to begin with (Ash et al 2004).

    To break this cycle, it is necessary to create incenves,

    both to use beer informaon at the local level and

    for providers to deliver high-quality, mely data. Agood starng point would be for the central health

    informaon system to require data to be disseminated

    on a clear schedule. However, this would not be enough

    to ensure that local providers are using the informaon.

    In other words, ensuring high-quality data is a necessary

    precondion for geng that informaon used by

    decision-makers and praconers, but it is in itself,

    not enough.

    For a typical health informaon system in a

    developing country, it is not easy to achieve data

    quality. Ensuring high-quality data is a necessary

    precondion for geng that informaon used by

    decision-makers and praconers, but it is, in itself,

    not enough.

    Health metrics and health informaon

    systems

    Murray and Frenk put forth the term metrics, to refer

    both to the science of measurement and to a specic set

    of instruments and indicators that provide the empirical

    basis to understand a parcular object of enquiry

    and acon (Murray & Frenk 2008). According to this

    denion, health metrics is related to measurement of,

    and to the instruments used to measure the health of

    the populaon. Measurement refers to esmang the

    magnitude of some aribute of an object (health status)

    and usually includes measuring tools, such as stascal

    models, which are calibrated to compare the object

    against an established standard.

    It is important to think of health as the product of many

    intertwined factors. A systemic approach to gathering

    and assessing health informaon is therefore paramount

    to good decision-making. This perspecve and approach

    is quite common in medicine for clinical or individual

    purposes. However when the problem concerns the

    organizaon, community or general populaon, the

    approach is oen fragmented. In the face of this

    challenge, technical soluons may be perceived as the

    cure-all, when in fact a more systemac diagnosis

    and treatment is needed. The systemic approach forpublic health problems should consider simultaneously

    human resources, the organizaonal environment and

    processes, and technology - and how to align them. In

    other words, besides the technical transformaon of

    the health system, an important cultural change in its

    organizaon needs to happen. It cannot burden the

    informaon providers to a degree that it is resisted, or

    be so cumbersome for an informaon consumer that its

    results are ignored.

    The work to be done on the health informaon

    system side is inherently connected with the idea of

    measurement. Any HIS should have as two of its goals

    Recent developments in strengtheninghealth informaon systems

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    good-quality data. There is also a scarcity of incenves to

    use the informaon collected through health informaon

    systems for decision-making and poor use of evidence

    from any source for decision-making.

    There is a very useful tool developed by the Roune

    Health Informaon Systems (RHINO) to idenfy which

    aributes of health informaon systems directly

    contribute to developing poor-quality products (Aqil

    et al 2009). The instrument used the Publishing

    Requirements for Industry Standards Metadata (PRISM)

    framework, which organises the determinants of the

    health informaon system performance into three

    blocks: technical, organisaonal and behavioural.The instrument was designed to be applied at a local

    level, and the results obtained, unl now, have been

    used more for local consumpon. Nevertheless, it is

    possible, and important, to generalise some lessons

    aer its applicaon in South Africa, Tanzania, Pakistan

    and Mexico. In relaon to the organisaonal and

    behavioural determinants, two main problems have

    emerged as common in all countries: the lack of a culture

    of informaon, and the immense need for in-country

    capacity building.

    Conversely, there are some experiences thatdemonstrate that a posive and supporve culture

    can be constructed around the producon and use

    of informaon using the products of the current

    health informaon system. For example, since 2001,

    the Ministry of Health in Mexico has been publishing

    an annual accountability report called Salud-Mexico

    (Secretaria de Salud 2002). The goal of this report is to

    document the states performance benchmarking system.

    The model adopted to present the informaon was

    based on selecng mainly health outcome indicators.

    The report uses the past year (or somemes the past two

    years) as reference points to measure improvements in

    the health system.

    The Mexican Government created incenves for

    informaon providers by mandang that the report

    be released publicly in a cizens forum, which brings

    together important federal and state decision-makers,

    civil society leaders, academics and the media. The

    government presets a date for the release of the report

    to provide a clear deadlinethe beginning of the second

    quarter of the year. Taking this approach created strong

    incenves for informaon providers to complete data

    collecon, data processing and data integraon withina short period. Because it was a naonal accountability

    Creang a culture of informaonand building capacity

    Building capacity in a country, like fostering a culture

    of knowledge, requires a good understanding of the

    operaonal environment. In many countries, building

    capacity requires reorganising past methods for

    informaon collecon. For example, for some naonal

    surveys, if the sample process is not standardised, the

    results are not comparable. This disconnuity allows

    health informaon system managers and other decision-

    makers to operate in dierent dimensions; they may

    only focus on immediate results or specic areas andnot examine naonwide trends. A lack of harmonisaon

    between naonal surveys also results in a weaker

    informaon system because managers and decision-

    makers have no uniform way to hold their systems

    accountable at a larger scale. Also, the capabilies of

    health informaon system workers are more dicult

    to understand without a uniform test to apply. With

    more rigorous programs to build worker capabilies

    and program capacity, health informaon systems could

    become stronger both within and across countries.

    Another reason that capacity is somemes weak is that

    health informaon systems do not span across a Ministryof Health or equivalent. Instead, there are somemes

    only small units of informaon and informacs within

    the health programs, but no organised systems to bring

    them together. In order to scale up the abundance

    of data across units, branches and departments, it is

    necessary to highlight the importance of having a logical

    and transparent structure; the importance of integraon

    to serve all users; and the importance of keeping

    autonomy regarding any kind of informaon (avoiding

    conicts of interest) (Krikeberg 2007). If these principles

    were applied to the informaon gathering systems by

    ministries of health in a comprehensive and systemacmanner, the quality, use and usefulness of informaon

    would increase markedly.

    The lack of a culture of informaon is widespread. This

    concept can be dened through several selected domains

    by aempng to understand the degree to which a

    country: uses numbers to describe problems and their

    soluons; aempts to understand a problem through

    the collecon of data and informaon; establishes a

    connuous quality learning process; and empowers

    people through imparng informaon and knowledge.

    In summary, in developing countries, there is oen anabsence of a common commitment to, and support for,

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    management demonstrates the various capacies in

    which health informaon systems have been used.

    The HMN developed a parcular health informaon

    system assessment framework to help countries assess

    how best to improve their systems. This framework

    adapts key components arculated by the General

    Theory of Systemsinputs, process, outputs and

    boundaries. As such, it does not prescribe precise,

    step-by-step requirements, but rather what the general

    components are and why they are needed. The HMN

    framework proposed a new structure in which health

    informaon system resources, not data, are the input.

    Specically, the structure denes input as the legislave,regulatory and planning framework required to ensure

    fully funconing health informaon systems, and the

    resources to ensure that each system is funconal

    (personnel, nancing, logiscs support, and informaon

    technology and communicaon).

    The framework idenes three key components in

    the process of strengthening the health informaon

    system for a parcular country. The components are

    idenfying indicators, data sources and methods for data

    management. According to this approach, collecng,

    storing, processing, compiling and analysing the data areall integral parts of well-funconing health informaon

    system. The outputs include two key components:

    informaon products, and disseminaon and use (ie the

    transformaon of data into informaon that will become

    the basis for evidence, and how to make the products of

    the system available and accessible to decision-makers).

    The important connecon between this framework and

    how health informaon systems can be used by decision-

    makers has been presented by Lozano et al (2007)

    in the context of assessing eecve coverage for key

    intervenons. Three specic lessons were arculated,which could be generalised to other types of health

    informaon:

    1. Naonal or local household health surveys are

    good data sources to measure eecve coverage;

    however, they must be supplemented by other

    techniques to measure some aspects (eg quality).

    2. Roune registries can also be very good data

    sources; however, registries should be at the

    individual level and have a high degree of accuracy.

    In the coverage example, follow-up of people with

    Health informaon systems are dened in many

    dierent ways, depending on who is using them versus

    who is implemenng them. Although these denions

    vary, health informaon systems more generally

    are the nexus of informaon, technology and the

    accompanying processes to provide strategic access to

    informaon for decision-makers. Health informaon

    systems are comprised of resources, mechanisms

    and methods that facilitate the acquision, storage,

    retrieval and use of data in health and health decision-

    making. The role of a health informaon system is to

    determine what informaon needs to be collected and

    tracked; to establish mechanisms for collecng the

    informaon; to build and sustain an ongoing process of

    adding value to the data collected; to ensure that the

    data are understood and used; and to substanate the

    need for data collecon so that funding is maintained.

    Health informaon systems can have mulple

    aributes. They can be: paent centred or public health

    oriented; subject based (paents, doctors, etc) or task

    based (hospital discharges registries); paper based or

    computer based.

    In any of its contexts, a health informaon system

    should act as value chain with dierent components

    that transform the original facts gathered into

    knowledge that can be applied by policy-makers to

    improve populaon health. While there are diering

    opinions in the literature about the scope of health

    informaon systems, there is general agreement that

    they are complex, dynamic, context based and of great

    social importance (Lenz et al 2002, Detmer 2003).

    To capture this informaon in a more standardised

    and comparable way, the use of health metrics has

    been increasing. Most recently, exibility of health

    informaon systems has been highlighted as an

    important component. This exibility includes beingable to receive and store data from many dierent

    sources and from mulple dimensionsfrom individual

    paent informaon to populaon-level me trends of

    morbidity; from storing only alphanumeric informaon

    to storing medical diagnosc images. Other recent

    changes include the heightened consideraon of health

    informaon system users. This is evidenced by the

    inclusion of paents and health consumers and through

    diversifying the use of data beyond paent care and

    administrave purposes. The shi from focusing mainly

    on technical health informaon system problems to

    those of change management and strategic informaon

    The Health informaon system as astascal tool

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    Network for Health Informaon (with the acronym RIPSA

    in Portuguese). The consensus process was arduous and

    lasted about six years. However, the product delivered

    was a manual that included detailed analyses about the

    quality of each database, key indicators to track, and

    common denions and ways to measure them. The

    agreement included a naonal mandate about the use

    of crude and corrected stascs when reports are used

    to describe subnaonal levels. It included descripons of

    the data source to be used and the methods to correct

    completeness problems. RIPSA connues to operate

    today as a valuable process to ensure high-quality,

    standardised indicators (RIPSA 2002).

    Geng naonal agreements about the inclusion of

    corrected stascs as an input for decision-makers is

    crucial. In Brazil, it was possible because there was a

    crical mass of experts that were able to employ these

    stascal methods and to engage in nuanced and

    informed arguments with the naonal group charged

    with making informaon available and useful. They were

    even able to strategically think about useful indicators for

    measuring progress with MDG such as infant mortality

    and maternal mortality. This opened the door to bridging

    the gap between informaon and policy.

    AbouZahr et al (2007) proposed a schema to smooth

    the pathway from informaon to policy. Their

    recommendaons for good pracce in the informaon

    producon process should be considered seriously

    because they apply to all health systems and to both

    developing and developed countries. According to

    the WHO framework for Health Systems Performance

    Assessment (Murray and Frenk 2000, WHO 2000),

    health informaon is one of the key components of

    the stewardship funcon of health systems. To support

    key acvies such as priority seng and performance

    assessment, high-quality informaon is a fundamental

    ingredient. Today, health informaon is becoming more

    important and is idened as a fundamental building

    block of the health system (WHO 2007). It is as important

    as service delivery, the health workforce or nancing.

    AbouZahr et al (2007) also raise the importance of the

    tension that internaonal agencies usually generate for

    countries when the local and internaonal indicators

    do not match. In a country with a decentralised health

    system, a similar problem also arises, though on a

    smaller scale, between the federal/naonal and the

    regional or local authories. Another obstacle can be amisunderstanding about ocial data. For many people,

    chronic condions such as high blood pressure and

    diabetes, and other acute condions, is necessary.

    3. Fragmentaon of the health system generates a

    fragmented health informaon system. Eecve

    coverage is a metric that is useful in combining

    informaon from both the public and private sectors

    of the health system.

    The use of informaon with sucient quality for

    comparability purposes requires establishing a broad

    (naonal or internaonal) and widely accepted

    mechanism of standardisaon. Somemes, there is

    tension amongst the involved groups that works against

    such acceptance of standardisaon. As informaon

    becomes more global, this problem will likely

    receive more aenon. TheInternaonal Stascal

    Classicaon of Diseases and Related Health Problems,

    10th revision (ICD-10), is a good example of a stascal

    tool that creates constant tension between universal

    standardisaon and local circumstances. However, this

    tension cannot be resolved by sheer force because the

    problem is persistent. For example, whenever there

    is an update to the ICD, to ensure the highest degree

    of comparability between countries each individualcountry must comprehensively update their systems and

    retrain their health workforce to code deaths using the

    updates. The ICD creates updates because it wants to

    incorporate latest advances in medical knowledge, but

    the transional cost to individual countries can be high.

    Health informaon systems must have standards, but,

    at the same me, countries should have the exibility

    to adapt to changes in their own health systems. The

    need for both standardisaon and exibility must be

    balanced in any health informaon system. In many

    instances, these opposing aributes have helped

    drive reform discussions. For example, in South Africa,

    standardisaon of health data was a major element in

    the process of changing the health informaon system.

    In Brazil in 1995, an ad hoc group was formed to develop

    and agree on a way to design databases at dierent

    instuons to help store informaon to calculate a

    core set of agreed indicators. Representaves from the

    main areas of the Ministry of Health, key parcipants

    from the informaon instuons of the country, and

    representaves from universies and academia all played

    a role. The Pan American Health Organizaon (PAHO)

    was also an important player in this iniave (PAHO2001). The project became known as the Interagency

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    Health data sources

    At a more general level, health stascs can be classied

    under two broad categories: primary microdata, and

    combined (aggregated) secondary macro-datasets.

    Several typologies exist that capture specic types of

    health data within these main categories.

    Primary microdata

    This is the category of major importance for generang

    health stascs and is the foundaon of most other

    datasets.

    Vital registraon

    Vital registraon data collects birth and death

    informaon and, given their importance, provides some

    of the most advanced and standardised types of health

    data across countries. The goal of any vital registraon

    system is to accurately record allbirths and deaths in the

    populaon as a whole. We can classify vital registraon

    sources into four dierent types:

    Complete vital registraon systems, including cause-

    of-death cercaon and coding according to the

    WHO ICD-10. For this system, the death cercate can

    provide crical data, parcularly if the informaon

    is digised along with the ICD-10 codes. These data

    become even more useful if they include a naonal ID

    number on the death cercate that allows matching

    to other data collected in household surveys,

    censuses or health service registries.

    Incomplete vital registraon systems that collect

    cause-of-death informaon according to the ICD-10,

    but are incomplete and/or do not have reliable death

    cercaon or naonal ID systems in place.

    Sample registraon systems, where vital registraon

    has been implemented in a sample of localies

    that are intended to be representave of the enre

    country. These systems have been successfully

    introduced in very populous countries such as India

    and China.

    Demographic surveillance sites (DSS) are used in

    many low-income countries to monitor vital events

    in specic communies. DSS were oen inially

    developed as research sites and have been used

    for large-scale clinical trials. However, a number of

    them have persisted and diversied the informaonthey collect. The largest network of such sites is the

    ocial data by denion are those gures produced

    by government agencies, regardless of the quality of

    the data. If the informaon comes from the Oce of

    Stascs of the Ministry of Health, it is automacally

    considered to be ocial and ready to use. However,

    informaon released by a government agency must sll

    be scrunised for quality.

    Despite this tension, from a country perspecve,

    it is important that a health informaon system

    responds primarily to country needs and secondarily

    to internaonal needs, such as those of the WHO.

    Even aer these priories have been sorted out, data

    ownership is not a minor issue, and is likely to be one ofthe most common sources of misunderstandings and a

    signicant obstacle to successful collaboraon between

    naonal and internaonal agencies. When there is no

    clear ownership of informaon, there is likely to be

    tension. The problems arise when the calculaons from

    internaonal agencies produce esmates for the same

    indicator that dier from those of naonal agencies.

    Somemes, it is dicult methodologically to explain

    why the two might be dierent. However, even if there

    is good reason for the two to dier methodologically,

    it is even more dicult to explain polically, and to a

    nontechnical audience, why a predicted value from an

    internaonal agency is much higher or lower than the

    ocial data of the country. The negave consequences

    of these problems generate two dierent reacons.

    Naonal stakeholders, believing that the internaonal

    organisaons are not acng in their best interest, will

    not share their data. Subsequently, the internaonal

    organisaons end up using incomplete databases, which

    forces them to model more esmates with limited data

    and simply perpetuates the original problem.

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    of health surveys in the United States. The objecve

    of the BRFSS is to collect uniform, state-specic data

    on health risk behaviours, clinical prevenve health

    pracces and health care access that are associated

    with the leading causes of morbidity and mortality.

    Data are collected from a representave sample in each

    state, and the sampling is designed to provide naonal

    esmates when data from all states data are combined

    (Mokdad et al 2003).

    Fourth, disease-specic or condion-specic

    standardised surveys, oen sponsored by WHO to

    examine a parcular health problem, have been carried

    out in many countries of the world. These surveys, whichare relavely standardised due to WHO sponsorship,

    cover malnutrion, adolescent risk factors, oral health,

    etc. A good example is WHOs Global Database on Child

    Growth and Malnutrion, which comprises informaon

    collected from populaon-based naonal and

    subnaonal surveys that follow a standard procedure

    to obtain comparable results from about 155 countries.

    In Australia, the Naonal Survey of Mental Health and

    Wellbeing (SMHWB) is designed to collect informaon

    on the mental health and wellbeing of the Australian

    populaon. The objecves of the survey are to provide

    informaon, about Australians aged 18 years or more,

    on the prevalence of selected major mental disorders,

    the level of disability associated with these disorders,

    and the health services used and the help needed

    as a consequence of mental health problems. The

    informaon is collected by personal interview from usual

    residents from approximately 15 000 private households.

    Fih, verbal autopsy is a highly specialised survey to

    esmate cause-of-death paerns in populaons that

    lack vital registraon. The survey focuses on collecng

    informaon from families of the deceased about signs

    and symptoms before the death. It can also be used by

    trained health professionals to idenfy causes of death

    in environments where most individuals die at home

    or without any contact with medical establishments.

    The verbal autopsy method has been developed to ask

    relaves of the deceased a series of symptom-based

    quesons about the events leading up to death, as well

    as broader sociodemographic and risk factor informaon

    that might yield clues as to the cause of death of the

    deceased. Based on this informaon, a cause of death

    can be assigned by a clinician. Although potenally very

    useful, there is less standardisaon in verbal autopsy

    instruments that have been used. However, there

    have been eorts to improve their comparability. Also,

    Internaonal Network of Field Sites with Connuous

    Demographic Evaluaon of Populaons and Their Health

    in Developing Countries (INDEPTH). Because they are

    not designed to be naonally representave, these

    sites are less useful to monitor naonal health levels.

    Household interview surveys

    Household interview surveys have followed standardised

    instruments and protocols, beginning with the World

    Ferlity Survey in the 1970s. It is useful to think of them

    under several dierent headings according to their

    main purpose.

    First, there are a set of fairly standardised mulcountry

    health interview surveys. These are not standardised

    with one another, but each survey program is

    implemented in approximately the same form in mulple

    countries. These include the demographic and health

    surveys (DHS), the World Health Surveys, the mulple

    indicator cluster surveys (MICS), the Pan Arab Project

    for Family Health (PAPFAM), the Pan Arab Project for

    Child Development (PAPCHILD) and the United States

    Centers for Disease Control and Prevenon (CDC)

    Reproducve Health Surveys. These surveys provide

    valuable informaon across and within countries,parcularly because each survey is fairly standard across

    the countries in which it has been implemented. For

    example, each DHS is fairly comparable to another,

    regardless of the country or the year in which it was

    implemented. The surveys are also useful because of

    the amount of specic health details that can be elicited

    from these interviews.

    Second, there are standardised mulcountry surveys, the

    primary purpose of which is collecng socioeconomic

    data, but which also have health modules. Examples

    include the Living Standards Measurement Surveys(LSMS) and the United Naons Household Surveys.

    The LSMS includes detailed health quesons that are

    helpful in measuring the ulisaon of health care and

    health expenditures.

    Third, naonal household health interview surveys are

    somemes ulised by countries to track health issues

    and levels within their own countries. These surveys

    allow for standardisaon over me and are specically

    tailored to a countrys health prole. In the United

    States , the Naonal Health Interview Survey has been

    conducted for over 30 years. The Behavioural Risk FactorSurveillance System (BRFSS) is a state-based system

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    Budgets and expenditure reports

    Expenditure and budgetary data provide valuable

    informaon on nancial resources for health. These data

    come from naonal budget documents, expenditure

    reviews and audit reports. Most oen, this informaon

    is available at the summary level. As part of the

    management of health services, budget and expenditure

    data are frequently provided by nancial management

    informaon systems, which are somemes maintained

    for the government as a whole, rather than just for the

    health system. There is less informaon being collected

    on individual expenditures on health, but these data are

    certainly desirable to obtain when possible.

    For policy development and strategic planning, nancial

    data are oen compiled using the methodology for

    naonal health accounts (NHA) (OECD 2000, World

    Bank et al 2002, Poullier et al 2003). This system

    provides informaon on the amount of nancial

    resources available for health and their ows across

    the health system. The breakdown of data into private

    and public sector categories is an important aspect in

    this regard. In addion, the disaggregaon of nancial

    informaon by major disease or health program area is

    possible. At subnaonal levels, budgetary informaonlinked to health system funcons and, in parcular,

    health intervenons, is a minimum requirement for

    performance budgeng.

    Epidemiological observaonal studies

    Epidemiological observaon studies follow a cohort of

    individuals over a number of years and are useful to

    provide informaon about disease progression and other

    key factors for disease and survival. They are generally

    completely researcher driven but, nonetheless, can be

    useful for assessing populaon health. Studies in the

    United States that have tracked individuals include the

    Framingham cohort, the Nurses Health Study and the

    American Cancer Societys Cancer Prevenon Study.

    Health facility assessments

    Health facility assessments are intended to capture the

    resources and inputs of a specic health centre, be it

    a primary care clinic, a community health centre or a

    specialty clinic. Modules include facility infrastructure,

    health centre budget reviews, pharmaceucal

    inventories, secondary output review, and services

    for specic condions such as tuberculosis treatment.

    As a result, it is advisable to regularly assess the quality

    of health service data and to help ensure some basic

    standardisaon, to the extent possible, to beer serve

    naonal and regional interests. Regular monitoring also

    helps to beer understand the aggregate capacity of a

    health system to provide care. Supervisory systems can

    be used to collect standardised and systemac data and

    to provide comparisons over me and between clinics

    and regions. Addional data may be collected through a

    health facility survey, which is usually based on a sample

    of clinics.

    Such a survey may consider dierent aspects of service

    quality such as the availability of drugs, commodiesand trained sta. Special techniques such as record

    review or observing clientprovider interacons can

    add considerable value to the assessment, but they also

    increase costs and complexity. Data collected from record

    reviews and stang inventories can be used to validate

    roune administrave stascs on the volume of services

    delivered and on the availability and geographical

    distribuon of human resources.

    Census data

    Where available, populaon-level census data can serve

    as the primary informaon source for determining the

    size of a populaon; its geographical distribuon; and

    the social, demographic and economic characteriscs

    of its people. Censuses have been undertaken in most

    countries in recent decades and, in some places, for

    more than a century. The Stascs Division of the United

    Naons Department of Economic and Stascal Aairs

    (UNDESA) has developed principles, recommendaons

    and manuals for populaon and housing censuses

    available from their website (UNDESA 2010).

    From a health perspecve, informaon on populaonnumbers and distribuon by age, sex and other

    characteriscs is essenal for naonal and local planning,

    esmang target populaon sizes and trends, and

    evaluang rates of service coverage and future needs.

    Census data can also provide valuable informaon

    on some key health outcomes, parcularly mortality.

    Informaon on major health determinants and other

    key factors such as poverty, housing condions, water

    and sanitaon, can also be collected in a census. The

    nature of the census allows for small-area esmaon and

    disaggregaon by key straers such as socioeconomic

    status. Censuses can also provide valuable informaonon the number of health professionals working in the

    health sector.

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    Health facility assessments are important in evaluang

    not only the resources that are necessary to provide

    health services to a populaon, but also to evaluate the

    quality of the services being provided and factors related

    to the regular provision of medicaments, such as stock-

    out rates.

    DHS Macro conducts service provision assessments in

    selected countries on a quasi-regular basis, gathering

    informaon from health facilies on the type and quality

    of care that they provide. The informaon provided to

    policy-makers includes data on health facilies in-country,

    and their resources, and basic systems and specic

    health services (eg basic child health services or maternalcare).

    Secondary macro-datasets

    Aggregate health indicators, such as those created by

    internaonal organisaons, are generally based on

    datasets that aggregate individual data. They are usually

    a mixture of datasets, oen poorly documented. Two

    major problems exist with these types of datasets.

    First, some countries do not have data on the quanty

    of interest. Therefore, although some aggregates can

    be compared, they are not enrely comparable cross-

    naonally, due to missing informaon from some

    countries. Second, those who create these aggregates

    (eg WHO, World Bank, United Naons Childrens Fund,

    United Naons Development Programme and United

    Naons Populaon Fund) do not always detail how the

    aggregate was generated. What is worse, countries oen

    report back to WHO the esmates that WHO provides as

    being their naonal esmates. This pracce discourages

    countries investment and interest in developing naonal

    health informaon systems designed to meet theirhealth development needs.

    Data that are generated through research are oen

    coupled with results that are very important for policy.

    These sources vary widely, depending on the aim of the

    research, and therefore the data obtained are dicult to

    categorise. However, they are useful as further sources

    of informaon. Thus far, the availability of these datasets

    has not been standardised, but there is increasing

    pressure to ensure that such data be made available

    by publicaon. The Instute for Health Metrics and

    Evaluaon (IHME), for example, has included this as a

    core principle of its operaon, and makes all data used in

    publicaon available on its website (IHME 2010).

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    Lozano R, Solis P, Gakidou E, et al (2006). Benchmarking

    performance of Mexican states with eecve coverage.

    Lancet 368(9548):17291741.

    Mokdad AH, Stroup DF and Giles WH (2003). Public

    health surveillance for behavioral risk factors in a

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    Behavioral Risk Factor Surveillance Team. Morbidity and

    Mortality Weekly Report. Recommendaons and Reports

    52(RR-9):112.

    Murray CJL and Frenk J (2000). A framework for

    assessing the performance of health systems. Bullen of

    the World Health Organizaon79(6):717732.

    Murray CLJ, Lopez A, Barofsky J et al (2007). Esmang

    populaon cause-specic mortality fracons from in-

    hospital mortality: Validaon of a new method. PloS

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    Development) (2000).A System of Health Accounts,

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    PAHO (Pan American Health Organizaon) (2001).

    Indicadores de Salud: Elementos bsicos para el anlisis

    de la situacin de salud.Bolen Epidemiolgico4:15.

    PARIS21 (Partnership in Stascs for Development in the

    21st Century) Secretariat.A Guide to Designing a Naonal

    Strategy for the Development of Stascs(NSDS).www.

    paris21.org/sites/default/les/1401_0.pdf (Accessed

    18 November 2011).

    PHDSC (Public Health Data Standards Consorum)

    (2007). Building a Roadmap for Health Informaon

    Systems Interoperability for Public Health (Public

    Health Uses of Electronic Health Record Data).www.

    ihe.net/Technical_Framework/upload/IHE_PHDSC_Public_Health_White_Paper_2007_10_11.pdf (Accessed

    1 March 2010)

    Poullier J, Hernndez P and Kawabata K (2003).

    Naonal Health Accounts: Concepts, Data Sources, and

    Methodology. Health Systems Performance Assessment:

    Debates, Methods and Empiricism, World Health

    Organizaon, Geneva.

    RIPSA (Interagency Network for Health Informaon)

    (2002).Indicadores Bsicos Para a Sade No Brasil:

    Cenceitos e Aplicacoes, RIPSA, Brasilia.

    AbouZahr C, Adjei S and Kanchanachitra C (2007). From

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    Lancet369:10391046.

    Aqil A, Lippeveld T and Dozumi D (2009). PRISM

    framework: a paradigm shi for designing, strengthening

    and evaluang roune health informaon systems.

    Health Policy and Planning 112.

    Ash J, Berg M and Coiera E (2004). Some unintended

    consequences of informaon technology in health care:

    the nature of paent care informaon system related

    errors.Journal of the American Medical Informaon

    Associaon11:104112.

    Detmer D (2003). Building the naonal health

    informaon infrastructure for personal health, health

    care services, public health and research. BMC Medical

    Informacs3:112.

    Evans T and Stanseld S (2003). Health informaon in

    the new millennium: a gathering storm? Bullen of the

    World Health Organizaon81(12):856.

    Haux R (2006). Health informaon systemspast,

    present, future.Internaonal Journal of Medical

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    1 March 2010).

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    The Knowledge Hubs for Health Iniave

    The Health Informaon Systems Knowledge

    Hub is one of four hubs established by

    AusAID in 2008 as part of the Australian

    Governments commitment to meeng

    the Millennium Development Goals and

    improving health in the Asia and Pacic

    regions. All four hubs share the common

    goal of expanding the experse and

    knowledge base to help inform and guide

    health policy.

    The Knowledge Hubs are funded by

    AusAIDs Strategic Partnership for

    Health Iniave.

    Health Informaon Systems Knowledge Hub

    The University of Queensland

    Aims to facilitate the development and integraon of health

    informaon systems into the broader health system strengthening

    agenda, and increase local capacity to ensure that cost-eecve,

    mely, reliable and relevant informaon is available. The Health

    Informaon Systems Knowledge Hub also aims to beer inform

    health informaon systems policies across Asia and the Pacic.

    www.uq.edu.au/hishub

    Human Resources for Health Knowledge Hub

    The University of New South Wales

    Aims to contribute to the quality and eecveness of Australias

    engagement in the health sector in the AsiaPacic region by

    developing innovave policy opons for strengthening human

    resources for health systems. The hub supports regional, naonal

    and internaonal partners to develop eecve evidence-informed

    naonal policy-making in the eld of human resources for health.

    www.hrhhub.unsw.edu.au

    Health Finance and Health Policy Knowledge Hub

    The Nossal Instute for Global Health(University of Melbourne)

    Aims to support regional, naonal and internaonal partners

    to develop eecve evidence-informed naonal policy-making,

    parcularly in the eld of health nance and health systems. Key

    themac areas for this hub include comparave analysis of health

    nance intervenons and health system outcomes; the role of

    non-state providers of health care; and health policy development

    in the Pacic.

    www.ni.unimelb.edu.au

    Compass: Womens and Childrens Health Knowledge Hub

    Compass is a partnership between the Centre for Internaonal

    Child Health, The University of Melbourne, Menzies School

    of Health Research and Burnet Instutes Centre for

    Internaonal Health.

    Aims to enhance the quality and eecveness of women's and

    childrens health intervenons and focuses on supporng the

    Millennium Development Goals 4 and 5improved maternal

    and child health, and universal access to reproducve health. Key

    themac areas for this hub include regional strategies for child

    survival; strengthening health systems for maternal and newborn

    health; adolescent reproducve health; and nutrion.

    www.wchknowledgehub.com.au

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    A strategic partnerships iniave funded by the Australian Agency for Internaonal Development