Table 1 Selected characteristics 1 of cohort participants at recruitment 2000/2001 and re-recruitment 2007/2008
Socio-demographic and health characteristics1at recruitment 2000/01 | Participants at baseline n = 3326 | Participants at wave 1 n = 2768 | Participants at wave 2 n = 2012 | All2non- participants at wave 2 n = 1314 | Of these: Dead2at wave 2 n = 647 | Of these: Refusers2at wave 2 n = 470 | Of these: Lost to follow-up2at wave 2 n = 197 |
|---|---|---|---|---|---|---|---|
Age at baseline (years) –mean (min., max.) | 71.9 ± 7.8 (60.2-97.2) | 71.2 ± 7.4 (60.2-97.0) | 69.5 ± 6.5 (60.2-93.0) | 75.5 ± 8.1 (60.3-97.2) | 77.8 ± 8.0 (60.9-97.2) | 72.5 ± 7.3 (60.9-95.8) | 75.0 ± 8.3 (60.3-94.2) |
Female gender – n (in %) | 2126/3326 (63.9) | 1728/2768 (62.4) | 1269/2012 (63.1) | 857/1314 (65.2) | 361/647 (55.8) | 347/470 (73.8) | 149/197 (75.6) |
Fair/poor self-perceived health –n (in %) | 1290/3326 (38.8) | 984/2768 (35.5) | 623/2012 (31.0) | 667/1314 (50.8) | 364/647 (56.3) | 213/470 (45.3) | 90/197 (45.7) |
≥ 1 hospital admission over past 12 months – n (in %) | 714/3326 (21.5) | 585/2768 (21.1) | 394/2012 (19.6) | 320/1314 (24.4) | 193/647 (29.8) | 87/470 (18.5) | 40/197 (20.3) |
> 6 physician visits over past 12 months – n (in %) | 1615/3326 (48.6) | 1342/2768 (48.5) | 935/2012 (46.5) | 680/1314 (51.8) | 363/647 (56.1) | 233/470 (49.6) | 84/197 (42.6) |
Diabetes, yes – n (in %) | 356/3326 (10.7) | 286/2768 (10.3) | 183/2012 (9.1) | 173/1314 (13.2) | 106/647 (16.4) | 45/470 (9.6) | 22/197 (11.2) |
Coronary heart disease ever, yes – n (in %) | 571/3326 (17.2) | 445/2768 (16.1) | 288/2012 (14.3) | 283/1314 (21.5) | 167/647 (25.8) | 83/470 (17.3) | 33/197 (16.8) |
Heart attack ever, yes –n (in %) | 269/3326 (8.1) | 204/2768 (7.4) | 134/2012 (6.7) | 135/1314 (10.3) | 91/647 (14.1) | 34/470 (7.2) | 10/197 (5.1) |
Caregiver available if needed, yes –n (in %) | 2699/3326 (81.1) | 2285/2768 (82.6) | 1705/2012 (84.7) | 994/1314 (75.6) | 495/647 (76.5) | 356/470 (75.7) | 143/197 (72.6) |