Skip to main content

Table 4 Percentage of respondents with disability in activities of daily living (ADL), instrumental activities of daily living (IADL) and either ADL or IADL, stratified by age and by sex

From: Recent trends in chronic disease, impairment and disability among older adults in the United States

  ADL or IADL Disability, % (95% Confidence Interval)
  Any ADL Any IADL Either ADL or IADL
Overall    
   1998, n = 10390 19.2 (18.4, 20.0) 17.8 (17.0, 18.6) 26.3 (25.4, 27.2)
   2004, n = 10621 17.4 (16.6, 18.2) 17.7 (16.9, 18.5) 25.3 (24.4, 26.2)
   2008, n = 10557 18.4 (17.6, 19.2) 16.6 (15.8, 17.4) 25.4 (24.5, 26.3)
  p = 0.01 p = 0.06 p = 0.25
Respondent Age    
65-69 years    
   1998, n = 3018 12.4 (11.2, 13.7) 9.1 (8.0, 10.2) 16.3 (14.9, 17.8)
   2004, n = 3392 11.3 (10.2, 12.6) 9.2 (8.2, 10.4) 15.5 (14.2, 16.9)
   2008, n = 3128 13.1 (11.7, 14.7) 9.5 (8.3, 10.8) 17.0 (15.5, 18.7)
  p = 0.15 p = 0.89 p = 0.31
70-74 years    
   1998, n = 2720 15.3 (13.9, 16.8) 12.6 (11.0, 13.5) 20.4 (18.8, 22.0)
2004, n = 2656
2008, n = 2908
13.4 (12.0, 14.9)
13.2 (11.9, 14.6)
12.2 (10.9, 13.6)
11.7 (10.5, 13.1)
19 (17.4, 20.7)
19 (17.4, 20.6)
  p = 0.08 p = 0.84 P = 0.38
75-79 years    
   1998, n = 2284 19.4 (17.7, 21.3) 19.1 (17.4, 20.9) 27.6 (25.6, 29.6)
   2004, n = 2031 17.1 (15.3, 18.9) 17.6 (15.8, 19.4) 25.7 (23.7, 27.8)
   2008, n = 2180 19.2 (17.4, 21.2) 15.1 (13.4, 16.8) 25.4 (23.4, 27.5)
  p = 0.12 p = 0.01 p = 0.27
80-84 years    
   1998, n = 1465 26.5 (24.1, 29.1) 26.7 (24.2, 29.2) 37.6 (34.9, 40.4)
   2004, n = 1609 22.2 (20.1, 24.5) 23.4 (21.1, 25.8) 32.8 (30.3, 35.4)
   2008, n = 1517 23.1 (22.4, 25.2) 24.6 (22.3, 27.1) 35.1 (32.5, 37.8)
  p = 0.03 p = 0.17 p = 0.05
≥ 85 years    
   1998, n = 1306 41 (38.0, 44.2) 46.6 (43.3, 49.6) 56.4 (53.2, 59.5)
   2004, n = 1425 36.6 (33.7, 39.3) 44.7 (41.5, 47.7) 54.0 (50.9, 57.1)
   2008, n = 1588 36.4 (35.9, 39.4) 39.1 (41.0, 44.5) 50.2 (47.2, 53.1)
  p = 0.08 p = 0.002 p = 0.02
Respondent Sex    
Male    
   1998, n = 4463 15.6 (14.5, 16.8) 15.3 (14.2, 16.5) 23.0 (21.7, 24.3)
   2004, n = 4595 14.9 (13.9, 16.1) 15.9 (14.7, 17.0) 23.2 (21.9, 24.5)
   2008, n = 4441 15.0 (13.9, 16.2) 13.8 (12.7, 14.9) 21.6 (20.3, 23.0)
  p = 0.65 p = 0.02 p = 0.18
Female    
   1998, n = 5927 21.7 (20.6, 22.9) 19.6 (18.6, 20.7) 28.7 (27.5, 30.0)
   2004, n = 6026 19.3 (18.3, 20.4) 19.1 (18.0, 20.2) 26.9 (25.7, 28.2)
   2008, n = 6116 21.0 (19.8, 22.1) 18.8 (17.7, 19.9) 28.3 (27.0, 29.5)
  p = 0.01 p = 0.53 p = 0.11
  1. Values are weighted percentages, with 95% confidence intervals in parentheses, derived by using the HRS respondent population weights of each year to adjust for the sampling design of survey.
  2. Note: P values were derived from the Wald chi-square tests which were performed to examine group differences in proportions of characteristics across years of survey. P-values refer to whether the proportions of characteristics were significantly different among groups between years.