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Table 1 Characteristics of the participants (n = 1508)

From: Multidimensional structure of the Groningen Frailty Indicator in community-dwelling older people

  Overall sample (n = 1508) Main sample (n = 1389) Smaller sample (n = 119) t (df) or Chi2(df) p
Mean age (y) ± SD 74.5 ± 6.9 74.3 ± 6.8 77.1 ± 7.7 −3.94 (135.5) <0.001*
Age groups, n (%)      
65 – 69 y 418 (29.2) 392 (29.8) 26 (21.8) 20.01 (4) <0.001*
70 – 74 y 363 (25.3) 344 (26.2) 19 (16)   
75 – 79 y 301 (21.0) 274 (20.9) 27 (22.7)   
80 – 84 y 206 (14.4) 181 (13.8) 25 (21)   
≥ 85 y 145 (10.1) 123 (9.4) 22 (18.5)   
Gender, n (%)      
Male 730 (50.7) 695 (52.7) 35 (29.4) 30.81 (2) <0.001*
Female 709 (49.3) 625 (47.3) 84 (70.6)   
Educational level, n (%)      
Low 644 (47.1) 582 (46.4) 62 (55.4) 5.47 (2) 0.065
Middle 507 (37.1) 467 (37.2) 40 (35.7)   
High 216 (15.8) 206 (16.4) 10 (8.9)   
Living situation, n (%)      
Living together 848 (58.3) 807 (60.4) 41 (34.7) 29.37 (1) <0.001*
Single living 606 (41.7) 529 (39.6) 77 (65.3)   
GFI, mean ± SD 3.0 ± 3.0 2.9 ± 3.0 3.4 ± 2.7 −1.77 (1506) 0.078
  1. Abbreviations: GFI Groningen Frailty Indicator.
  2. *Values are percentages unless indicated otherwise.
  3. Independent t-test results.
  4. Chi2 test results.
  5. *p < 0.05.