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Table 1 Sample Characteristics for the Total Sample (n = 1481) and Different Subgroups

From: Baseline participation in a health examination survey of the population 65 years and older: who is missed and why?

  Total sample      
  Total Ineligible Eligible    
    Total Participants Non-participants    
      Total NP+ NP- NR
  n = 1481 n = 173 n = 1,308 n = 299 n = 1009 n = 384 n = 324 n = 301
Women - %
(95 %-CI)
49.4
(46.8, 51.9)
44.5
(37.3, 52.0)
50.0
(47.3, 52.7)
45.8
(40.3, 51.5)
51.2
(48.2, 54.3)
54.7
(49.7, 59.6)
51.9
(46.4, 57.2)
46.2
(40.6, 51.8)
Age in years –
M (SD)
77.2 (7.6) 80.0 (8.8) 76.8 (7.4) 75.0 (6.6) 77.4 (7.5) 78.1 (7.3) 77.7 (7.6) 76.0 (7.5)
Age groups - % (95 %-CI)         
 65–74 years 41.9
(39.4, 44.4)
30.1
(23.7, 37.3)
43.4
(40.8, 46.1)
53.8
(48.2, 59.4)
40.3
(37.4, 43.4)
33.6
(29.1, 38.5)
39.5
(34.3, 44.9)
49.8
(44.2, 55.4)
 75–84 years 40.6
(38.1, 43.1)
39.3
(32.3, 46.7)
40.7
(38.1, 43.4)
35.8
(30.6, 41.4)
42.2
(39.2, 45.3)
48.4
(43.5, 53.4)
40.7
(35.5, 46.2)
35.9
(30.7, 41.4)
 ≥ 85 years 17.6
(15.7, 19.6)
30.6
(24.2, 37.9)
15.8
(13.9, 17.9)
10.4
(7.4, 14.3)
17.4
(15.2, 19.9)
18.0
(14.5, 22.1)
19.8
(15.8, 24.4)
14.3
(10.8, 18.7)
Non-German citizenship - % (95 %-CI) 11.5
(10.0, 13.3)
38.7
(31.8, 46.2)
8.0
(6.6, 9.5)
2.7
(1.4, 5.2)
9.5
(7.9, 11.5)
3.4
(2.0, 5.7)
7.4
(5.0, 10.8)
19.6
(15.5, 24.5)
Residential care - % (95 %-CI) 4.1
(3.2, 5.3)
9.2
(5.8, 14.5)
3.4
(2.6, 4.6)
0.7
(0.2, 2.4)
4.3
(3.2, 5.7)
6.0
(4.0, 8.8)
4.0
(2.4, 6.7)
2.3
(1.1, 4.7)
Deprived neighborhood - %
(95 %-CI)
35.4
(33.0, 37.9)
43.4
(36.2, 50.8)
34.3
(31.8, 36.9)
28.1
(23.3, 33.4)
36.2
(33.3, 39.2)
35.7
(31.0, 40.6)
37.0
(32.0, 42.4)
35.9
(30.7, 41.4)
  1. Abbreviations: 95 %-CI = 95 % confidence interval; M = mean; NP + = non-participants with the short questionnaire, i.e., individuals who declined study participation but completed the short questionnaire; NP- = non-participants without the short questionnaire, i.e., individuals who declined study participation and completing the short questionnaire; NR = non-respondents, i.e., individuals who could not be reached during the recruitment period and who did not actively decline study participation; SD = standard deviation
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