Table 1.

Study characteristics of the analytic sample by country

Variable	Czech republic N = 1596	Russia N = 1784	Poland N = 2726	Total N = 6106
Mean age, years (SD)	63.6 (4.4)	63.0 (5.1)	61.6 (5.6)	62.5 (5.2)
Female (%)	935 (58.6%)	1228 (68.8%)	1489 (54.6%)	3652 (59.8%)
Mean CASP-12 score at W1 (0–36) (SD)	23.3 (5.3)	20.7 (6.0)	24.9 (5.7)	23.3 (6.0)
Mean CASP-12 score at W2 (0–36) (SD)	27.4 (4.9)	21.3 (6.2)	25.8 (5.8)	24.9 (6.2)
Median frequency of contact with friends and relatives score (0–10) (IQR)	7 (5.8)	6 (4.7)	5 (3.6)	6 (4.7)
Frequency of contact with friends and relatives tertiles (%)
Low (0–4)	16.5%	27.0%	42.9%	31.4%
Medium (5–6)	31.6%	37.3%	33.3%	34.0%
High (7–10)	51.9%	35.7%	23.8%	34.6%
CES-D 20 score ≥ 16 at W1 (%)	273 (17.1%)	544 (30.5%)	687 (25.2%)	1,504 (24.6)
CES-D 10 score ≥ 4 at W2 (%)	197 (12.3%)	832 (46.6%)	840 (30.8%)	1869 (30.6%)
Not partnered (%)	385 (24.1%)	591 (33.1%)	696 (25.5%)	1672 (27.4%)
Educational attainment (%)
Primary	204 (12.8%)	160 (9.0%)	84 (14.1%)	784 (12.3%)
Vocational	600 (37.6%)	475 (26.6%)	634 (23.3%)	1,709 (28.0%)
Secondary	606 (38.0%)	704 (39.5%)	1,115 (40.9%)	2,425 (39.7%)
University	186 (11.6%)	445 (24.9%)	593 (21.8%)	1,224 (20.1%)
Smoking status (%)
Smoker	281 (17.6%)	277 (15.5%)	656 (24.1%)	1,241 (19.9%)
Ex-smoker	511 (32.0%)	227 (12.7%)	831 (30.5%)	1,569 (25.7%)
Never smoker	804 (50.4%)	1280 (71.8%)	1239 (45.5%)	3323 (54.4%)
Median alcohol intake (grams per week) (IQR)	40 (0.120)	0 (0.0)	0 (0.20)	0 (0.40)
Self-rated health (%)
Very good/good	564 (35.3%)	76 (4.3%)	692 (25.4%)	1332 (21.8%)
Average	855 (53.6%)	1150 (64.5%)	1557 (57.1%)	3562 (58.3%)
Poor/very poor	177 (11.1%)	558 (31.3%)	477 (17.5%)	1,212 (19.9%)
Median physical functioning (0–100) (IQR)	85 (75.95)	80 (60.95)	80 (65.95)	85 (65.95)
Median hours of weekly physical activity (IQR)	3 (0.8)	0 (0.3)	5 (0.10)	3 (0.7)
Median deprivation scale (0–12) (IQR)	0 (0.2)	4 (1.6)	1 (0.4)	2 (0.4)