trends in functional status and disability among the elderly
DESCRIPTION
Trends in Functional Status and Disability among the Elderly. U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics. Ellen Kramarow Jennifer Akerblom NCHS Data Users Conference July 2004. Overview. - PowerPoint PPT PresentationTRANSCRIPT
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Trends in Functional Status and Disability among the Elderly
Ellen Kramarow
Jennifer Akerblom
NCHS Data Users Conference
July 2004
U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICESCenters for Disease Control and PreventionNational Center for Health Statistics
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Overview
Disability and Functioning
•Definitions
•Trends
Data Warehouse on Trends in Health and Aging
•Examples
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Definitions
Conceptual Frameworks (Nagi, IOM, WHO)
•Pathology
•Impairment
•Functional Limitation
•Disability
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Definitions
Disability is a complex concept
•Intersection of individual’s capacity with environment
•Measurement in surveys does not necessarily capture all aspects of concept
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Definitions
Disability Measurement
•Self-report vs. performance measures
•Survey design considerations (e.g., institutionalized vs. noninstitutionalized, age groups, cross section vs. panel, self-report vs. proxy)
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Definitions
Disability Measurement
•Activities of Daily Living (ADL)
•Instrumental Activities of Daily Living (IADL)
•Physical functioning (aka Nagi items)
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Definitions
Disability Measurement
•Question wording •Difficulty•Needs/receives help•Ability to perform with/without
help or equipment
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Trends
Recent review in JAMA (Freedman et al., 2002)
•Declines in IADL limitations
•Declines in physical functioning (Nagi) limitations
•Mixed evidence on ADLs (forthcoming paper shows decline in some measures from mid-1990s)
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Trends
Data Warehouse on Trends in Health and Aging
• A collection of data tables providing information on trends of health and health care use by older Americans. Viewable online or with Beyond 20/20 software.
• Supported with funding from the National Institute on Aging (NIA)
• http://www.cdc.gov/nchs/agingact.htm
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Medicare Current Beneficiary Survey (MCBS)
• Began in 1991
• Survey sample:
• N = 12,000 (target sample size)
• community and facility dwelling Medicare beneficiaries
• Questions include:
• health care use and cost
• sociodemographic characteristics
• health status
• physical functioning
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MCBS and ADLs
•Question:
•Because of a health or physical problem, do you have any difficulty bathing/showering, dressing, eating, getting in/out of a bed/chair, walking, or using the toilet?
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Limitation of Activity: Any Difficulty Performing ADLs, MCBS 1992-2002
0
5
10
15
20
25
30
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Year
Per
cen
t (a
ge-
adju
sted
)
Bathing/Showering Dressing Eating
Getting in/out of bed/chairs Walking Using the toilet
Community Residents Age 65 and over
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Difficulty Performing ADL - Bathing/Showering - by Race, MCBS 1992-2002, Community Residents Age 65 and over
0
5
10
15
20
25
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Year
Pe
rce
nt
(ag
e-a
dju
ste
d)
White non-Hispanic Black non-Hispanic Hispanic
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Limitation of Activity: Difficulty Performing Activities of Daily Living, by Age,
Residence, Sex, Race and Ethnicity. MCBS, 1992-2002
• Among all individuals age >=65:
• Decrease in reported ADL limitations between 1992-2002
• Among individuals living in a facility:
• Increasing trend in reported difficulty eating and/or using the toilet
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National Health Interview Survey(NHIS)
• Initiated in 1957
• Surveys the civilian non-institutionalized population, N = approx. 100,000 persons from about 43,000 households
• Collects information on the amount, distribution and effects of illness and disability
• Survey redesigned in 1997
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NHIS and ADLs
•Question:• Because of a physical, mental, or
emotional problem, do you need the help of other persons with personal care needs? If yes, do you need the help of other persons with bathing, dressing, eating, getting in/out of bed/chair, using the toilet, including getting to the toilet, and getting around inside the home?
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Needing Help with Activities of Daily Living, NHIS, 1997-2001 Noninstitutionalized Persons, Age 65 and over
0
1
2
3
4
5
6
7
1997 1998 1999 2000 2001
Year
Per
cen
t (a
ge-
adju
sted
)
Bathing/Showering Dressing Eating
Getting in/out of bed/chair Using/getting to toilet Getting around inside home
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Needing Help with Activities of Daily Living - Bathing/Showering, NHIS 1997-2001 Noninstitutionalized Persons Age 65 and over
0
1
2
3
4
5
6
7
8
1997 1998 1999 2000 2001
Per
cen
t (a
ge-
adju
sted
)
BothsexesMale
Female
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Needing Help with ADLs by Age, Sex, Race, and Hispanic Origin. NHIS, 1997-2001
• From 1997-2001, a decreasing trend in reported need for help with bathing/showering was observed
• No significant change occurred in the percentage of people reporting they need help with other ADLs
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Limitations in Bathing, Noninstitutionalized Persons Age 65 and over: MCBS and NHIS
0
2
4
6
8
10
12
14
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Year
Per
cen
t (a
ge-
adju
sted
)
MCBS
NHIS
Any difficulty
Needs help
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MCBS and Physical Functioning
• Question:
• How much difficulty, if any, do you have stooping, lifting, reaching, grasping, and walking a quarter mile?
• Response Options:
• No difficulty at all, A little difficulty, Some difficulty, A lot of difficulty, Not able to do, Refused, Don’t know
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Any Difficulty in Physical Functioning - Community Residents Age 65 and over, MCBS 1992-2002
0
10
20
30
40
50
60
70
80
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Years
Pe
rce
nt
(ag
e a
dju
ste
d)
Stooping Lifting Reaching Grasping Walking
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Limitation of Activity: Difficulty in Physical Functioning by Age, Residence, Sex and Race. MCBS, 1992-2002
• Community dwelling individuals reported:
• Increased difficulty stooping
• Decreased difficulty lifting, reaching and grasping
• Facility dwelling individuals reported:
• Increased difficulty lifting
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NHIS and Physical Functioning
• Question:
• By yourself, without using any special equipment, how difficult is it for you to walk a quarter mile, climb, stand, sit, stoop, reach, grasp, carry, and push?
• Response Options:
• Not at all difficult, Only a little difficult, Somewhat difficult, Very difficult, Can’t do at all, Do not do this activity
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Any Difficulty in Physical Functioning, Noninstitutionalized Persons Age 65 and over, NHIS 1997-2002
0
10
20
30
40
50
60
70
1997-1998 1998-1999 1999-2000 2000-2001 2001-2002
Years
Per
cen
t (a
ge-
adju
sted
)
Walking Climbing Standing Sitting Stooping
Reaching Grasping Carrying Pushing Any limitation
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Any Difficulty in Physical Functioning by Age, Sex, Race, and Hispanic Origin. NHIS, 1997-2002
• 65% of the respondents reported ‘any difficulty’ with at least 1 of 9 physical tasks
• Percentage reporting ‘any difficulty’ has remained constant from 1997-2002
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Any Difficulty with Selected Physical Functioning Measures Among Noninstitutionalized Persons Age 65
and over in MCBS and NHIS
0
10
20
30
40
50
60
70
80
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Years
Per
cen
t (a
ge-
adju
sted
)
MCBS - Stooping
MCBS - Walking
NHIS - Stooping
NHIS - Walking
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Discrepancy in Stooping Measure
• MCBS asks about “stooping, crouching, or kneeling”
• NHIS asks about “stooping, bending, or kneeling”
• Percent “unable” to perform stooping is similar in both surveys
• Unclear why estimates are different
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Summary
• MCBS data from 1990s show decline in ADL limitation among noninstitutionalized older persons.
• NHIS shows a decline in percent needing help with bathing/showering only from 1997 to 2001.
• For many items, no change seen during time period covered by NHIS.
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Summary
• MCBS shows declining percent with difficulty in lifting, reaching, and grasping. Stooping measure is a puzzle.
• Data on institutionalized generally show increase in disability.
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Summary
• A lot of data on disability and functioning among the elderly are available.
• Estimates across sources may differ because of differences in question wording, sample design, and other factors.
• Making sense of the data takes work and attention to detail.