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Table 1 Selected characteristics 1 of cohort participants at recruitment 2000/2001 and re-recruitment 2007/2008

From: The longitudinal urban cohort ageing study (LUCAS): study protocol and participation in the first decade

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)
  1. 1Questions from Pra (Probability of Repeated Admissions) questionnaire [33, 34].
  2. 2 All non-participants comprise those dead, refusing and lost to follow-up at wave 2.