Table 1.
Baseline characteristics of the study sample (n=1184)
| Missing | Age at baseline | P value | ||||||
| 50–60 years | 61–78 years | Total | ||||||
| % | 95% CI | % | 95% CI | % | 95% CI | |||
| Individual factors | ||||||||
| Sex | 0 | |||||||
| Women (n=622) | 53.0 | (49.5 to 56.5) | 51.8 | (48.2 to 55.3) | 52.5 | (49.8 to 55.3) | 0.600 | |
| Men (n=562) | 47.0 | (43.5 to 50.5) | 48.2 | (44.7 to 51.8) | 47.5 | (44.7 to 50.2) | ||
| Socioeconomic status | 14 | |||||||
| Low (n=151) | 11.4 | (8.9 to 14.4) | 15.2 | (11.9 to 19.2) | 12.9 | (10.6 to 15.7) | <0.001 | |
| Middle (n=712) | 57.5 | (53.5 to 61.3) | 66.0 | (61.6 to 70.1) | 60.9 | (57.8 to 63.8) | ||
| High (n=307) | 31.2 | (27.3 to 35.3) | 18.8 | (15.0 to 23.3) | 26.2 | (23.0 to 29.7) | ||
| Chronic disease | 3 | |||||||
| No (n=869) | 78.5 | (75.4 to 81.4) | 66.0 | (61.6 to 70.2) | 73.6 | (70.8 to 76.2) | <0.001 | |
| Yes (n=312) | 21.5 | (18.6 to 24.6) | 34.0 | (29.8 to 38.4) | 26.4 | (23.8 to 29.2) | ||
| Obesity | 3 | |||||||
| Yes (n=297) | 24.5 | (20.8 to 28.5) | 26.2 | (22.3 to 30.4) | 25.1 | (22.2 to 28.4) | 0.504 | |
| No (n=884) | 75.5 | (71.5 to 79.2) | 73.8 | (69.6 to 77.7) | 74.9 | (71.6 to 77.8) | ||
| Interpersonal factors | ||||||||
| Living with a spouse | 16 | |||||||
| No (n=216) | 16.7 | (14.0 to 19.7) | 21.2 | (17.7 to 25.3) | 18.5 | (16.2 to 21.1) | 0.035 | |
| Yes (n=952) | 83.3 | (80.3 to 86.0) | 78.8 | (74.7 to 82.3) | 81.5 | (78.9 to 83.8) | ||
| Social support | 21 | |||||||
| Low (n=100) | 7.6 | (5.7 to 10.0) | 10.2 | (7.8 to 13.1) | 8.6 | (7.0 to 10.5) | 0.110 | |
| High (n=1063) | 92.4 | (90.0 to 94.3) | 89.8 | (86.9 to 92.2) | 91.4 | (89.5 to 93.0) | ||
| Behavioural factors | ||||||||
| Leisure time physical activity | 26 | |||||||
| Every week (n=784) | 72.1 | (67.9 to 76.0) | 61.0 | (56.8 to 65.1) | 67.7 | (64.4 to 70.9) | <0.001 | |
| Not every week (n=374) | 27.9 | (24.0 to 32.1) | 39.0 | (34.9 to 43.2) | 32.3 | (29.1 to 35.6) | ||
| At least one health programme | 0 | |||||||
| Yes (n=124) | 12.6 | (10.4 to 15.3) | 7.2 | (5.2 to 10.0) | 10.5 | (8.8 to 12.5) | 0.002 | |
| No (n=1060) | 87.4 | (84.7 to 89.6) | 92.8 | (90.0 to 94.8) | 89.5 | (87.5 to 91.2) | ||
| Smoking status | 11 | |||||||
| Smoker (n=188) | 20.0 | (17.2 to 23.0) | 10.1 | (7.5 to 13.3) | 16.0 | (14.0 to 18.2) | <0.001 | |
| Non-smoker (n=985) | 80.0 | (77.0 to 82.8) | 89.9 | (86.7 to 92.5) | 84.0 | (81.8 to 86.0) | ||
| Environmental factors | ||||||||
| Residential area size | 0 | |||||||
| Rural (n=249) | 20.3 | (13.5 to 29.4) | 22.1 | (14.4 to 32.2) | 21 | (14.2 to 30.0) | 0.601 | |
| Small-sized city (n=247) | 20.1 | (13.3 to 29.1) | 22.1 | (14.4 to 32.3) | 20.9 | (14.0 to 30.0) | ||
| Medium-sized city (n=318) | 26.9 | (19.0 to 36.7) | 26.8 | (18.5 to 37.0) | 26.9 | (19.1 to 36.3) | ||
| Metropolitan city (n=370) | 32.7 | (23.7 to 43.1) | 29.1 | (20.4 to 39.7) | 31.3 | (22.7 to 41.4) | ||
| Satisfaction with residential area | 21 | |||||||
| Not satisfied (n=308) | 26.1 | (22.9 to 29.7) | 27.0 | (23.3 to 31.0) | 26.5 | (23.9 to 29.2) | 0.733 | |
| Satisfied (n=855) | 73.9 | (70.3 to 77.1) | 73.0 | (69.0 to 76.7) | 73.5 | (70.8 to 76.1) | ||