Table 2:
Baseline characteristics of women aged 20 years and older in Taiwan, by body mass index (BMI)
| Characteristic | BMI; % of participants* | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| < 18.5 n = 6 850 |
18.5–19.9 n = 10 171 |
20.0–21.9 n = 16 054 |
22.0–23.9 n = 13 253 |
24.0–25.9 n = 9 224 |
26.0–27.9 n = 5 322 |
28.0–29.9 n = 2 633 |
30.0–34.9 n = 1 908 |
≥ 35 n = 303 |
|
| Age, yr, mean (SD) | 32.7 (10.6) | 35.5 (11.1) | 40.1 (12.2) | 45.5 (13.1) | 49.5 (12.8) | 51.6 (12.5) | 51.8 (12.4) | 51.2 (13.0) | 47.6 (13.5) |
| Height, cm, mean (SD) | 158.6 (5.6) | 158.0 (5.5) | 157.0 (5.6) | 155.7 (5.6) | 155.0 (5.5) | 154.4 (5.5) | 154.3 (5.6) | 154.3 (5.6) | 154.4 (6.3) |
| Weight, kg, mean (SD) | 44.0 (3.7) | 48.3 (3.5) | 51.8 (3.8) | 55.7 (4.1) | 59.9 (4.4) | 64.2 (4.7) | 68.9 (5.1) | 75.6 (6.3) | 89.7 (9.5) |
| BMI, mean (SD) | 17.5 (0.8) | 19.3 (0.4) | 21.0 (0.6) | 23.0 (0.6) | 24.9 (0.6) | 26.9 (0.6) | 28.9 (0.6) | 31.7 (1.3) | 37.6 (2.4) |
| Smoking status | |||||||||
| Current | 9.0 | 7.3 | 5.6 | 4.7 | 3.9 | 4.2 | 4.3 | 5.0 | 6.7 |
| Former | 2.2 | 2.0 | 1.6 | 1.3 | 1.1 | 1.0 | 1.5 | 1.5 | 2.1 |
| Never | 88.8 | 90.7 | 92.8 | 94.0 | 95.0 | 94.8 | 94.2 | 93.5 | 91.2 |
| Alcohol intake | |||||||||
| Current | 5.6 | 4.9 | 5.9 | 5.7 | 5.7 | 5.6 | 4.6 | 5.3 | 6.2 |
| Former | 1.5 | 1.3 | 1.4 | 1.6 | 1.5 | 1.4 | 1.3 | 2.3 | 6.2 |
| Never | 92.9 | 93.8 | 92.7 | 92.8 | 92.8 | 92.9 | 94.1 | 92.4 | 87.6 |
| Betel-nut chewing | |||||||||
| Current | 0.2 | 0.3 | 0.3 | 0.3 | 0.5 | 0.9 | 1.3 | 1.6 | 2.9 |
| Former | 0.2 | 0.1 | 0.2 | 0.4 | 0.3 | 0.5 | 0.5 | 0.9 | 0.4 |
| Never | 99.6 | 99.6 | 99.5 | 99.3 | 99.2 | 98.6 | 98.2 | 98.5 | 96.7 |
| Level of physical activity | |||||||||
| None or mild | 67.2 | 60.2 | 54.7 | 50.2 | 49.0 | 48.9 | 52.7 | 54.6 | 59.2 |
| Moderate | 28.1 | 32.9 | 35.1 | 34.3 | 32.8 | 31.6 | 30.0 | 29.0 | 29.6 |
| Vigorous | 4.7 | 7.0 | 10.2 | 15.5 | 18.2 | 19.5 | 17.2 | 16.5 | 11.2 |
| Income level | |||||||||
| Low | 57.8 | 54.3 | 57.0 | 65.6 | 73.4 | 78.5 | 79.4 | 82.8 | 80.1 |
| Moderate | 39.8 | 42.7 | 39.6 | 31.6 | 24.4 | 19.5 | 17.9 | 15.7 | 18.1 |
| High | 2.4 | 3.0 | 3.4 | 2.8 | 2.2 | 2.1 | 2.7 | 1.5 | 1.8 |
| Education level | |||||||||
| Low | 7.0 | 9.9 | 18.6 | 34.7 | 48.5 | 58.5 | 61.6 | 62.0 | 56.7 |
| Moderate | 38.6 | 39.7 | 40.5 | 37.0 | 32.8 | 28.5 | 26.6 | 26.1 | 28.9 |
| High | 54.4 | 50.5 | 40.9 | 28.3 | 18.7 | 13.0 | 11.8 | 11.9 | 14.4 |
Note: SD = standard deviation.
*
Unless stated otherwise.