Table 1. Baseline characteristics of the study subjects by body mass index categories.
| Men | Women | |||||||||||||
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| Body Mass Index | Body Mass Index | |||||||||||||
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| No. of Subjects | <18.5 | 18.5-20.9 | 21.0-22.9 | 23.0-24.9 | 25.0-26.9 | 27.0-29.9 | 30≤ | <18.5 | 18.5-20.9 | 21.0-22.9 | 23.0-24.9 | 25.0-26.9 | 27.0-29.9 | 30≤ |
| 368 | 2,946 | 5,045 | 5,363 | 3,007 | 1,648 | 363 | 561 | 3,292 | 5,227 | 5,298 | 3,560 | 2,274 | 658 | |
| Mean age (SD) | 53.1 (8.2) | 51.6 (7.9) | 51.5 (7.7) | 51.4 (7.6) | 51.3 (7.4) | 51.1 (7.4) | 50.8 (7.1) | 51.7 (8.1) | 50.6 (7.7) | 51.2 (7.4) | 52.2 (7.2) | 53.2 (7.2) | 53.3 (7.1) | 53.5 (7.2) |
| Mean weight (kg) (SD) | 49.1 (4.6) | 54.5 (4.3) | 59.3 (4.8) | 64.4 (5.0) | 70.1 (5.5) | 75.6 (5.9) | 82.9 (8.8) | 42.3 (3.8) | 47.0 (3.7) | 51.3 (3.8) | 55.8 (3.9) | 59.7 (4.2) | 64.9 (4.8) | 72.1 (7.4) |
| Mean height (m) (SD) | 1.66 (0.08) | 1.65 (0.06) | 1.64 (0.06) | 1.64 (0.06) | 1.64 (0.06) | 1.64 (0.06) | 1.62 (0.10) | 1.55 (0.08) | 1.53 (0.05) | 1.52 (0.05) | 1.52 (0.05) | 1.52 (0.05) | 1.52 (0.05) | 1.50 (0.08) |
| Mean body mass index (kg/m2) (SD) | 17.7 (0.9) | 20.1 (0.7) | 22.0 (0.6) | 24.0 (0.6) | 25.9 (0.6) | 28.1 (0.8) | 31.7 (2.3) | 17.6 (0.9) | 20.0 (0.7) | 22.0 (0.6) | 24.0 (0.6) | 25.9 (0.6) | 28.2 (0.8) | 32.1 (2.4) |
| Weight change since 20 years old (%) | ||||||||||||||
| ≤-10.0kg | 16.9 | 8.5 | 3.8 | 2.4 | 1.7 | 1.5 | 0.9 | 14.6 | 6.7 | 3.1 | 0.9 | 0.8 | 0.3 | 0.3 |
| -9.9kg∼-5.0kg | 30.0 | 21.8 | 13.5 | 7.0 | 3.5 | 2.1 | 1.5 | 31.7 | 22.8 | 15.3 | 5.9 | 2.7 | 1.3 | 0.6 |
| -4.9kg∼+4.9kg | 49.3 | 62.4 | 58.2 | 37.3 | 14.0 | 5.8 | 4.4 | 50.8 | 60.0 | 53.2 | 36.5 | 18.5 | 6.9 | 3.2 |
| +5.0kg∼+9.9kg | 2.3 | 6.2 | 19.2 | 32.3 | 30.1 | 17.8 | 10.8 | 2.2 | 9.5 | 23.1 | 36.1 | 34.8 | 21.3 | 9.0 |
| +10.0kg∼+19.9kg | 1.5 | 1.2 | 5.1 | 20.4 | 46.6 | 55.8 | 36.3 | 0.8 | 1.0 | 5.3 | 20.3 | 40.9 | 58.1 | 40.5 |
| +20.0kg≤ | 0.0 | 0.0 | 0.2 | 0.6 | 4.1 | 16.9 | 46.2 | 0.0 | 0.0 | 0.1 | 0.3 | 2.3 | 12.0 | 46.3 |
| Education (%) | ||||||||||||||
| ≤15 | 41.5 | 42.0 | 40.7 | 40.0 | 40.0 | 40.9 | 42.9 | 36.0 | 35.6 | 36.5 | 39.5 | 43.0 | 46.5 | 51.4 |
| 16-18 | 41.2 | 45.7 | 45.9 | 46.1 | 44.8 | 44.5 | 43.2 | 48.6 | 49.5 | 49.9 | 47.7 | 46.2 | 43.7 | 41.2 |
| 19≤ | 17.4 | 12.4 | 13.4 | 13.9 | 15.2 | 14.6 | 13.8 | 15.4 | 15.0 | 13.6 | 12.8 | 10.9 | 9.8 | 7.4 |
| Living with spouse (%) | ||||||||||||||
| Yes | 91.2 | 90.6 | 92.6 | 92.9 | 93.9 | 93.4 | 91.1 | 83.7 | 86.9 | 87.0 | 89.5 | 88.4 | 87.3 | 83.3 |
| No | 8.8 | 9.4 | 7.4 | 7.1 | 6.2 | 6.6 | 8.9 | 16.3 | 13.1 | 13.0 | 10.5 | 11.7 | 12.7 | 16.7 |
| Green vegetables (%) | ||||||||||||||
| ≤1-2 times/month | 11.6 | 15.5 | 14.4 | 14.5 | 16.3 | 16.0 | 19.4 | 11.6 | 9.0 | 8.1 | 8.1 | 8.2 | 9.1 | 10.5 |
| 1-2 times/week | 36.8 | 34.8 | 34.9 | 34.9 | 36.3 | 35.7 | 36.9 | 27.3 | 31.4 | 28.7 | 29.2 | 30.5 | 30.2 | 31.4 |
| 3-4 times/week | 29.8 | 29.4 | 30.0 | 29.7 | 28.8 | 29.4 | 26.2 | 35.8 | 33.7 | 36.0 | 36.1 | 34.6 | 35.2 | 35.0 |
| Everyday | 21.9 | 20.4 | 20.7 | 20.9 | 18.6 | 18.9 | 17.5 | 25.3 | 25.9 | 27.2 | 26.7 | 26.7 | 25.5 | 23.2 |
| Oranges (%) | ||||||||||||||
| ≤1-2 times/month | 32.7 | 30.5 | 29.9 | 28.9 | 29.7 | 29.2 | 29.7 | 18.5 | 16.8 | 15.2 | 14.8 | 15.2 | 17.0 | 18.8 |
| 1-2 times/week | 27.4 | 29.3 | 30.1 | 30.0 | 30.0 | 29.6 | 29.7 | 21.1 | 20.7 | 20.4 | 20.6 | 20.9 | 21.5 | 20.0 |
| 3-4 times/week | 23.0 | 23.6 | 22.7 | 23.3 | 21.7 | 22.7 | 20.9 | 25.6 | 27.7 | 28.1 | 26.8 | 27.0 | 26.5 | 25.0 |
| Everyday | 17.0 | 16.6 | 17.3 | 17.8 | 18.6 | 18.6 | 19.5 | 34.8 | 34.9 | 36.3 | 37.9 | 36.9 | 35.0 | 36.3 |
| Smoking status (%) | ||||||||||||||
| Never | 13.9 | 15.0 | 17.5 | 20.7 | 23.5 | 23.3 | 22.2 | 83.2 | 86.7 | 89.6 | 91.7 | 90.9 | 90.7 | 85.3 |
| Past | 13.3 | 14.3 | 17.4 | 21.6 | 23.4 | 23.8 | 27.1 | 3.0 | 3.0 | 1.9 | 1.5 | 1.4 | 2.1 | 3.5 |
| 1-19 cigarrets/day | 21.2 | 19.1 | 16.7 | 14.6 | 11.9 | 11.3 | 9.2 | 8.4 | 7.7 | 6.3 | 4.9 | 5.3 | 4.7 | 6.7 |
| 20≤ cigarrets/day | 51.6 | 51.5 | 48.4 | 43.1 | 41.1 | 41.6 | 41.5 | 5.5 | 2.7 | 2.2 | 1.9 | 2.3 | 2.6 | 4.5 |
| Alcohol drinking (%) | ||||||||||||||
| Never | 21.3 | 17.1 | 15.9 | 15.3 | 14.5 | 15.8 | 18.7 | 71.3 | 69.8 | 69.0 | 70.1 | 72.0 | 71.9 | 69.0 |
| Past | 9.7 | 6.5 | 5.7 | 5.3 | 5.9 | 6.2 | 8.1 | 5.1 | 3.7 | 3.4 | 3.5 | 3.1 | 4.0 | 7.2 |
| Current | 69.1 | 76.4 | 78.4 | 79.4 | 79.7 | 78.0 | 73.2 | 23.6 | 26.5 | 27.6 | 26.4 | 25.0 | 24.1 | 23.8 |
| Walking (%) | ||||||||||||||
| 1 hr/day≤ | 45.9 | 47.6 | 49.0 | 44.8 | 41.7 | 43.4 | 37.5 | 45.1 | 46.0 | 46.5 | 46.1 | 45.1 | 47.0 | 37.5 |
| <1 hr/day | 54.1 | 52.4 | 51.0 | 55.2 | 58.3 | 56.6 | 62.5 | 54.9 | 54.0 | 53.6 | 53.9 | 54.9 | 53.0 | 62.5 |
SD: standard deviation