Table 2.
Factors associated with body mass index.
| Variables | Obesity | Overweight | Underweight | |||
|---|---|---|---|---|---|---|
| Adjusted OR | 95% CI | Adjusted OR | 95% CI | Adjusted OR | 95% CI | |
| Dinner Companion | ||||||
| With Family | 1.00 | 1.00 | 1.00 | |||
| With Others | 1.19 * | (1.04–1.36) | 1.03 | (0.89–1.19) | 0.86 | (0.65–1.14) |
| Alone | 1.15 * | (1.03–1.27) | 1.11 | (0.99–1.23) | 0.68 * | (0.53–0.86) |
| Breakfast Companion | ||||||
| With Family | 1.00 | 1.00 | 1.00 | |||
| With Others | 1.16 | (0.91–1.46) | 0.81 | (0.62–1.06) | 0.92 | (0.52–1.63) |
| Alone | 0.96 | (0.89–1.04) | 0.91 | (0.83–1.00) | 1.23 * | (1.02–1.48) |
| Gender | ||||||
| Male | 2.18 * | (1.99–2.38) | 1.83 * | (1.65–2.02) | 0.75 * | (0.61–0.93) |
| Female | 1.00 | 1.00 | 1.00 | |||
| Age (year) | ||||||
| 19–29 | 0.82 | (0.67–1.01) | 0.63 * | (0.50–0.80) | 2.18 * | (1.49–3.17) |
| 30–39 | 1.02 | (0.88–1.19) | 0.77 * | (0.66–0.91) | 1.74 * | (1.27–2.37) |
| 40–49 | 1.11 | (0.97–1.28) | 0.92 | (0.80–1.06) | 1.11 | (0.83–1.49) |
| 50–59 | 1.16 * | (1.04–1.31) | 1.05 | (0.92–1.19) | 0.94 | (0.70–1.25) |
| ≥60 | 1.00 | 1.00 | 1.00 | |||
| Education Level | ||||||
| Middle school or less | 1.77 * | (1.55–2.02) | 1.64 * | (1.41–1.90) | 0.92 | (0.65–1.31) |
| High school | 1.14 * | (1.04–1.26) | 1.16 * | (1.04–1.29) | 1.00 | (0.77–1.28) |
| College or over | 1.00 | 1.00 | 1.00 | |||
| Marital Status | ||||||
| Married | 1.25 * | (1.06–1.47) | 1.29 * | (1.08–1.54) | 0.57 * | (0.44–0.76) |
| Separated or divorced | 1.35 * | (1.10–1.65) | 1.40 * | (1.13–1.74) | 0.63 * | (0.44–0.91) |
| Unmarried | 1.00 | 1.00 | 1.00 | |||
| Region | ||||||
| Urban | 0.90 * | (0.83–0.97) | 0.98 | (0.91–1.07) | 1.03 | (0.88–1.21) |
| Rural | 1.00 | 1.00 | 1.00 | |||
| Household Income Level | ||||||
| Quartile 1 (lowest) | 1.10 | (0.95–1.26) | 1.00 | (0.86–1.15) | 1.13 | (0.86–1.50) |
| Quartile 2 | 1.13 * | (1.02–1.26) | 1.00 | (0.89–1.13) | 1.09 | (0.87–1.37) |
| Quartile 3 | 1.11 * | (1.00–1.23) | 0.96 | (0.86–1.07) | 0.90 | (0.73–1.11) |
| Quartile 4 (highest) | 1.00 | 1.00 | 1.00 | |||
| Frequency of Heavy Drinking | ||||||
| None | 1.00 | 1.00 | 1.00 | |||
| Once a month | 1.09 | (0.98–1.20) | 1.09 | (0.98–1.21) | 0.87 | (0.72–1.05) |
| Once a week | 1.34 * | (1.19–1.51) | 1.17 * | (1.03–1.33) | 0.64 * | (0.49–0.85) |
| Occupational Classification | ||||||
| White-collar | 0.98 | (0.88–1.09) | 1.07 | (0.94–1.20) | 0.94 | (0.75–1.17) |
| Blue-collar | 0.97 | (0.87–1.07) | 0.95 | (0.84–1.07) | 0.79 | (0.61–1.02) |
| Pink-collar | 1.10 | (0.97–1.24) | 1.13 | (0.98–1.29) | 1.04 | (0.80–1.35) |
| None | 1.00 | 1.00 | 1.00 | |||
| Number of Days of Muscular Exercise | ||||||
| None | 1.15 | (0.99–1.34) | 0.93 | (0.78–1.09) | 1.69 * | (1.14–2.51) |
| 1–2 | 1.14 | (0.94–1.38) | 0.98 | (0.79–1.20) | 1.40 | (0.89–2.19) |
| 3–4 | 1.02 | (0.84–1.23) | 0.97 | (0.80–1.19) | 1.04 | (0.63–1.72) |
| ≥5 | 1.00 | 1.00 | 1.00 | |||
| Self-Reported Health Status | ||||||
| High | 0.64 * | (0.57–0.71) | 1.02 | (0.90–1.15) | 0.41 * | (0.33–0.52) |
| Middle | 0.78 * | (0.71–0.86) | 1.06 | (0.95–1.19) | 0.56 * | (0.45–0.68) |
| Low | 1.00 | 1.00 | 1.00 | |||
| Eating Out Rate | ||||||
| Everyday | 1.07 | (0.94–1.22) | 1.33 * | (1.16–1.54) | 0.95 | (0.73–1.25) |
| 3–6 times per week | 1.04 | (0.95–1.15) | 1.09 | (0.98–1.21) | 0.87 | (0.71–1.08) |
| None | 1.00 | 1.00 | 1.00 | |||
| Year | ||||||
| 2013 | 0.87 * | (0.78–0.98) | 0.94 | (0.83–1.06) | 1.1.5 | (0.89–1.48) |
| 2014 | 0.86 * | (0.76–0.98) | 0.93 | (0.82–1.05) | 0.98 | (0.77–1.26) |
| 2015 | 0.99 | (0.88–1.11) | 1.03 | (0.90–1.16) | 1.06 | (0.82–1.36) |
| 2016 | 1.08 | (0.96–1.21) | 1.01 | (0.89–1.15) | 1.03 | (0.81–1.31) |
| 2017 | 1.00 | 1.00 | 1.00 | |||
Statistically significant was marked as *. Abbreviations: OR = Odds Ratios, CI = confidence intervals.