telemedicine & e-health nicolette de keizer dept medical informatics university of amsterdam
TRANSCRIPT
Telemedicine & e-Health
Nicolette de Keizer
Dept Medical Informatics University of Amsterdam
Evolution of telemedicine
• 1924: radio doctor • 1975 first RCT
“Comparison of television and telephone for remote medical consultation” in NEJM
• NASA checks vital signs of astronauts
• ’90: introduction of the Internet
Outline
• Definitions: e-health, telemedicine• Quality assurance• Laws and ethics• Technical possibilities• Impact on health care• Factors for failure and success • Example in Teledermatology
Definition Telemedicine“ The delivery of healthcare services, where distance is a critical factor,
by all healthcare professionals using information and communication
technologies for the exchange of valid information for diagnosis,
treatment and prevention of disease and injuries, research and
evaluation, and for the continuing education of healthcare providers,
all in the interests of advancing the health of individuals and their
communities”. WHO(2002)
• Telemedicine is the use of telecommunication technologies to provide healthcare services across geographic, temporal, social, and cultural barriers. J. Reid, 1996
Definitions: e-Health
• 51 unique definitions (Hans Oh, JMIR, 2005)
• administration of health data electronically (ESA)
• e-health is an emerging field in the intersection of medical informatics, public health and business, referring to health services and information delivered or enhanced through the Internet and related technologies. (Eysenbach, JMIR, 2001)
• The use of internet technology by the public, health workers, and others to access health and lifestyle information, services and support (Wyatt, JECH, 2002)
Calling names
• Virtual Outreach
• Hospitals Without Walls
• Reaching The Unreached
• Bridging the Urban-Rural divide
eHealth vs telemedicine
eHealth
Telemedicine
Quality assurance
• Code of behaviour• Certificate of (trusted) third party
Code of behaviour: e-Health code of Ethics
1. Sincerity: objectives, financial interest
2. Honesty: no misleading information
3. Quality: correct and recent information with acknowledgement
4. Informed consent: use of data
5. Privacy: carefull use of data
6. Professional: professional care
7. Responsible care provision
Laws and Ethics
• Autorisation – right to read and change information
• Identification – is person X person X?
• Laws/Privacy• Internet not restricted to
country borders• Responsibility - Who?
Example NL
www.artsennet.nl, 20/3/05“I didn’t know it would go so fast”
Disciplines to internet physician
Minister surprised about internet development
Drug prescription via the internet should be prohibited
Agree
Neutral
Disagree
55%
44%
1%
Statement
Example NL (2)
• College of Hospitals advices Patient and Internet, 20/3/2000
• Buying health products via Internet occurs on a limited scale: – 5% of interviewees once bought health products via
the Internet (most commonly vitamines)– Of the interviewees 71% do not intend to buy in the
future.
Teleconsultation
• Videoconferencing (real-time)• Store-and-forward
Entities involved in Telemedicine
Telemedicine Platform Desktop PC, Laptop,Palmtop/PDA
Telemedicine Software Acquisition,Storage and display Transmission of patient related information
Clinical Devices Digital ECG, Electronic Stethoscope, Digital Camera,Tele-
pathology Microscope, X-Ray Digitizer
Communication Media (mobile) phone, Internet, Bluetooth
Which settings benefits from telemedicine?
Only large distance
Also small distance
Telemedicine – large distances
• Developing countries• Army• Places hard to reach• Disasters• Space
An evaluation of the first year's experience with a low-cost telemedicine link in Bangladesh.Vassallo DJ, Hoque F, Roberts MF, Patterson V, Swinfen P, Swinfen R. Journal of Telemedicine and Telecare, 2001
Mobile TMU
Telemedicine – small distances
• Jail• Shy, socially
challenged people• Pressure of work,
shortage of personell• Nursing homes
Impact on health care
• Quality of care• Access to care• Cost of care
Cell-life
Impact on health care
Quality of care– Diagnostics– Treatment (AIDS patients in
South Afrika,Cell-life)– Patient satisfaction (early
treatment, no live physician)
Outcome measures Quality of Care
• Diagnostic accuracy• Delay in treatment• Preventable consultations• Adherence to medication• Quality of life• Mortality and morbidity
Impact on Health Care
Access to health care– Patients with communication
disabilities (dumb, deaf)– Isolated patients, hard to
reach– Independent of time / place– Contact with fellow-sufferers– Education
Outcome measures Access to Care
• Patients satisfaction• Timeliness disease detection• Adherence to (treatment) advice
Impact on health care
Costs of Health care– Prevention of diseases – lower costs for
society– Prevention of consultations
• Lower costs due to less specialist consultations• Higher costs due to more consultations
– No valid evidence for cost reduction by telemedicine (Whitten, BMJ, 2002)
Typology of cost studies
• Types:– Cost analysis - What does the service cost ?– Cost minimization - Does the service save money ? – Cost effectiveness analyse - What is the balance
between costs and effects?
• Perspective: patient, care provider, society?
Other outcome measures
• Physicians satisfaction• Technical aspects: quality of photo’s,
performance of application• Usability of the service
Factors of success and failure
• Success:– Satisfaction patients and health care professionals– Better involved patients– Addition not replacement to physicians practice
• Failure– Fear of technique– Inaccurate– Limitations in time, money and knowledge
• Tele-Radiology
• Tele-Cardiology
• Tele-Pathology
• Tele-Ophthalmology
• Tele-Dermatology
• Tele-Psychiatry
• Tele-Surgery
• Tele……..Anything
Types
An example of a study inTeledermatology
Context
• High pressure on health care due to:– Shortage on full-time specialists – Aging population
• Physical joint consultations – 33% less referrals (Vierhout et al, Lancet, 1995)
• Modern information and communication technology more possibilities telemedicine
Teledermatology
• Telemedicine application in dermatology• Dermatology:
– High number of GP consultations (ca. 8%) – Visual orientation
• Teledermatology worldwide and in NL:– Local implementations and financial compensations– No robust scientific evidence for effectiveness and
efficiency (o.a. Eminovic et al, BJD 2007)
Conventional care versus teledermatologie
GP Dermatologist
Dermatologist
patiënt
patient
info
Info + images
advice
patient35%
Conventional care
Teledermatology
GP
Less referals?Less costs?
PERFECTD
• Primary care Electronic Referrals: Focus on Efficient Consultation using Telemedicine in dermatology
• Virtual consultations between GPs and dermatologists
PERFECT D: outcome measures
– Unnecessary referrals– Patient satisfaction– Costs savings
PERFECTD methods
• Multicentre cluster RCT • Randomisation GPs
– Control group = conventional care / referral– Intervention group = teledermatology
• All patients go to live dermatologist• Cost minimizing study
Less consultations?
Live dermatologist
Patient referred to dermatologist Control group
Interventiongroup
Description signs + digital photos to derm
Teleadvice + intervention GP
Dermatologist decision:Consultation necessary or
unnecessary
• Societal perspective• Modelling cost components
– GP– Dermatologist– Programme costs (camera, software, training, etc.)– Patient– Employer
• Cost value input: PERFECTD RCT, Handbook, experiment, expert opinion
• Monte Carlo simulatie (sensitivity & scenario analyse)
Less costs?
Cost Benefit
• Costs + Time GP
+ investments (camera, website, internet)
+ training GP
+ easy to refer
• Benefits
- less consultations to outpatient clinic
- less try-outs by GP
- Faster treatment in outpatient clinic
Cost model
Results
• 605 patients included• 312 intervention, 293 control group• Preventable consultations:
– 39% intervention group, 18.3% control group– Most important reason for difference is RECOVERY of
patients
• Costs:– Conventional care: 345.3 Euro (95%CI, 242.5 – 461.2) – Teledermatology: 354.0 Euro (95%CI, 228.0 – 484.0)
Scenario analysis
Unneccesary referals >17% GP TD time <7.5 minutes
Scenario analysis
Distance to GP < 55km Distance to dermatologist
Conclusions
• Less referals to outpatient clinic but no difference in costs
• Cost effective when teledermatology is used for specific patient groups or settings:– Higher percentage unneccesary referals– Larger distance to dermatologist– Less time for GP ->integration TD with GP
system
…Questions?…