Table 2. Weighted percentages of body mass index groups by characteristics.
| Characteristics | Normal/under weight | Overweight | Obese | p-value¶ | |
|---|---|---|---|---|---|
| Category | %* (SE) | ||||
| Age (years) | 19–29 | 73.88 (2.67) | 17.95 (2.26) | 8.17 (1.66) | < 0.0001†† |
| 30–39 | 62.53 (1.90) | 29.46 (1.71) | 8.01 (1.06) | ||
| 40–49 | 63.17 (1.93) | 31.46 (1.87) | 5.37 (0.81) | ||
| 50–59 | 61.23 (1.86) | 34.40 (1.76) | 4.37 (0.80) | ||
| 60–69 | 56.18 (1.91) | 39.75 (1.86) | 4.07 (0.74) | ||
| ≥ 70 | 57.29 (2.71) | 40.46 (2.61) | 2.25 (0.76) | ||
| Gender | Men | 57.04 (1.48) | 35.99 (1.33) | 6.97 (0.77) | < 0.0001†† |
| Women | 71.03 (1.21) | 24.19 (1.08) | 4.78 (0.56) | ||
| Marital status | Single | 69.20 (2.21) | 23.84 (1.85) | 6.96 (1.28) | 0.0005†† |
| Married | 61.63 (1.07) | 32.81 (1.00) | 5.56 (0.46) | ||
| Household income | 1st quartile | 61.14 (1.88) | 34.09 (1.85) | 4.77 (0.83) | 0.1236 |
| 2nd quartile | 61.36 (1.91) | 32.71 (1.80) | 5.93 (0.80) | ||
| 3rd quartile | 63.94 (1.77) | 29.46 (1.69) | 6.60 (0.82) | ||
| 4th quartile | 66.67 (2.00) | 27.50 (1.64) | 5.83 (1.00) | ||
| Education | ≤ Middle school | 58.05 (1.70) | 37.70 (1.59) | 4.25 (0.62) | < 0.0001†† |
| High school | 60.20 (1.60) | 32.70 (1.54) | 7.10 (0.82) | ||
| ≥ College | 68.07 (1.51) | 26.06 (1.27) | 5.87 (0.75) | ||
| Smoking | Non-smoker† | 65.43 (1.06) | 29.24 (0.89) | 5.33 (0.50) | 0.0015** |
| Current-smoker | 57.72 (2.12) | 34.32 (2.13) | 7.96 (1.23) | ||
| Exercise | No | 64.46 (1.16) | 29.78 (1.04) | 5.76 (0.51) | 0.4084 |
| Yes‡ | 61.37 (1.84) | 32.20 (1.66) | 6.43 (1.22) | ||
| Drinking | None | 66.90 (1.54) | 27.02 (1.42) | 6.08 (0.82) | < 0.0006†† |
| Light drinker§ | 66.61 (1.66) | 28.90 (1.49) | 4.49 (0.78) | ||
| Heavy drinker‖ | 59.14 (1.64) | 33.88 (1.53) | 6.98 (0.80) | ||
SE: standard error.
*Weighted percentages after accounting for the sampling design; †Non-smoker: never smoked or quit smoking; ‡Exercise: exercising ≥ 3 times a week for ≥ 20 minutes with sweating; §Light drinker: drinking less than heavy drinker; ‖Heavy drinker: drinking ≥ 3 times a week and ≥ 7 glasses for men (5 glasses for women); ¶p-value by χ2 test; **p-value < 0.01; ††p-value < 0.001.