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Table 2 Percentage of respondents with 0, 1, 2, 3, or 4 or more chronic diseases by survey year, overall and stratified by age and by sex

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

  Number of chronic diseases, % (95% Confidence Interval)
  0 1 2 3 4+
Overall*      
   1998, n = 10390 13.1
(12.4, 13.8)
26.9
(26.0, 27.8)
29.4
(28.5, 30.3)
19.1
(18.3, 19.9)
11.6
(10.9, 12.2)
   2004, n = 10621 8.8
(8.2, 9.4)
23.1
(22.3, 24.0)
30.2
(29.2, 31.1)
22.7
(21.8, 23.6)
15.2
(14.5, 16.0)
   2008, n = 10557 7.8
(7.2, 8.4)
21.2
(20.4, 22.1)
29.7
(28.8, 30.7)
23.9
(23.0, 24.8)
17.4
(16.6, 18.2)
Respondent Age      
65-69 years*      
   1998, n = 3018 17.0
(15.5, 18.5)
30.8
(29.1, 32.6)
27.0
(25.3, 28.8)
16.1
(14.7, 17.5)
9.1
(8.1, 10.3)
   2004, n = 3392 12.2
(11.0, 13.5)
26.9
(25.3, 28.6)
29.4
(27.8, 31.1)
19.8
(18.3, 21.3)
11.7
(10.6, 12.9)
   2008, n = 3128 11.7
(10.3, 13.2)
25.0
(23.2, 26.9)
30.3
(28.4, 32.3)
20.4
(18.8, 22.1)
12.7
(11.4, 14.2)
70-74 years*      
   1998, n = 2720 14.8
(13.4, 16.3)
27.7
(26.0, 29.5)
30.1
(28.3, 31.9)
17.6
(16.2, 19.2)
9.8
(8.7, 11.0)
   2004, n = 2656 10.4
(9.2, 11.8)
24.3
(22.6, 26.2)
29.5
(27.6, 31.4)
21.5
(19.9, 23.3)
14.2
(12.8, 15.8)
   2008, n = 2908 7.5
(6.5, 8.6)
21.7
(20.1, 23.5)
30.8
(28.9, 32.7)
23.2
(21.5, 25.0)
16.8
(15.4, 18.4)
75-79 years*      
   1998, n = 2284 11.2
(9.9, 12.7)
24.8
(22.9, 26.7)
30.0
(28.0, 32.1)
20.3
(18.6, 22.2)
13.7
(12.2, 15.3)
   2004, n = 2031 6.4
(5.3, 7.6)
20.9
(19.0, 22.9)
32.0
(29.8, 34.2)
24.1
(22.2, 26.2)
16.6
(14.9, 18.5)
   2008, n = 2180 5.7
(4.7, 6.9)
19.3
(17.5, 21.3)
28.5
(26.4, 30.6)
26.6
(24.6, 28.7)
19.9
(18.1, 21.9)
80-84 years*      
   1998, n = 1465 8.3
(6.9, 10.1)
23.7
(21.4, 26.2)
30.1
(27.6, 32.8)
22.6
(20.3, 25.0)
15.3
(13.3, 17.5)
   2004, n = 1609 5.9
(4.8, 7.3)
19.1
(17.0, 21.4)
30.3
(27.9, 32.9)
25.2
(22.9, 27.7)
19.5
(17.4, 21.7)
   2008, n = 1517 4.6
(3.6, 5.9)
16.8
(14.9, 19.0)
30.6
(28.1, 33.2)
28.1
(25.7, 30.7)
19.8
(17.7, 22.1)
≥ 85 years*      
   1998, n = 1306 7.7
(6.1, 9.5)
22.2
(19.6, 24.9)
32.0
(29.1, 35.0)
24.4
(21.8, 27.3)
13.8
(11.8, 16.1)
2004, n = 1425
2008, n = 1588
5.0
(3.8, 6.6)
4.5
(4.6, 6.2)
20.7
(18.3, 23.3)
17.7
(18.2, 21.0)
30.0
(27.3, 32.9)
27.4
(27.8, 31.1)
26.4
(23.7, 29.2)
26.3
(24.1, 27.2)
17.9
(15.6, 20.5)
24.1
(18.7, 21.6)
Respondent Sex      
Male*      
   1998, n = 4463 13.6
(12.6, 14.8)
27.2
(25.8, 28.6)
28.7
(27.3, 30.1)
19.2
(17.9, 20.4)
11.3
(10.4, 12.4)
   2004, n = 4595 9.8
(8.9, 10.7)
22.7
(21.4, 24.1)
29.2
(27.8, 30.7)
23.0
(21.7, 24.4)
15.4
(14.3, 16.5)
   2008, n = 4441 8.9
(7.9, 9.9)
21.1
(19.8, 22.6)
28.4
(26.9, 30.0)
24.1
(22.7, 25.5)
17.5
(16.3, 18.7)
Female*      
   1998, n = 5927 12.8
(11.9, 13.7)
26.7
(25.5, 27.9)
29.9
(28.7, 31.2)
19.0
(17.9, 20.1)
11.7
(10.9, 12.6)
   2004, n = 6026 8.1
(7.3, 8.8)
23.5
(22.3, 24.7)
30.9
(29.7, 32.2)
22.4
(21.3, 23.6)
15.1
(14.2, 16.1)
   2008, n = 6116 6.9
(6.2, 7.7)
21.3
(20.2, 22.5)
30.7
(29.5, 32.0)
23.8
(22.6, 25.0)
17.3
(16.2, 18.4)
  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. * P value < 0.001, 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 or characteristics were significantly different among groups between years.