Table 3. Interactions of School-and Individual-Level Factors in Association With Mental Well-Beinga.
| Variable | B (95% CI)b | P value |
|---|---|---|
| Sex | ||
| Female | 0 [Reference] | NA |
| Male | 0.097 (0.090 to 0.105) | <.001 |
| Ethnic group | ||
| Han | 0.010 (0.007 to 0.013) | <.001 |
| Other | 0 [Reference] | NA |
| BMIc | −0.023 (−0.026 to −0.020) | <.001 |
| 1-Child family | ||
| No | 0 [Reference] | NA |
| Yes | 0.014 (0.011 to 0.017) | <.001 |
| Drinking | ||
| No | 0 [Reference] | NA |
| Yes | −0.087 (−0.090 to −0.084) | <.001 |
| Smoking | ||
| No | 0 [Reference] | NA |
| Yes | −0.042 (−0.045 to −0.039) | <.001 |
| Amount of exercise, d/wk | ||
| ≤2 | 0 [Reference] | NA |
| 3-4 | 0.066 (0.063 to 0.069) | <.001 |
| 5-7 | 0.131 (0.128 to 0.135) | <.001 |
| Subjective family SESc | 0.121 (0.118 to 0.125) | <.001 |
| Self-rated popularity in schoolc | 0.337 (0.333 to 0.340) | <.001 |
| Objective family SESc | 0.014 (0.011 to 0.018) | <.001 |
| Mother’s education level | ||
| ≤High school | 0 [Reference] | NA |
| Junior college | 0.098 (0.049 to 0.146) | <.001 |
| Bachelor’s | 0.176 (0.123 to 0.228) | <.001 |
| HDI level of resident province | ||
| Very low | 0 [Reference] | NA |
| High | 0.430 (0.166 to 0.695) | .001 |
| Very high | 0.749 (0.381 to 1.116) | <.001 |
| School type | ||
| Private | 0 [Reference] | NA |
| Public | 0.376 (0.044 to 0.708) | .03 |
| Psychological courses offered | ||
| None | 0 [Reference] | NA |
| 1/2 wk For all students | 1.026 (0.332 to 1.721) | .004 |
| Age: ≥2 wk for some students | 0.055 (0.001 to 0.109) | .05 |
| Age: 1/2 wk for all students | −0.047 (−0.089 to −0.005) | .03 |
| Female: ≥2/wk for some students | −0.184 (−0.323 to −0.046) | .009 |
| Female: 1/2 wk for all students | −0.118 (−0.218 to −0.019) | .02 |
| Female: ≥2/wk for all students | −0.288 (−0.460 to −0.116) | .001 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); HDI, Human Development Index; NA, not applicable; SES, socioeconomic status.
a
Based on model 2 (linear mixed model), interactions between age, sex, and psychological courses into model 3. Only statistically significant results of model 3 are presented in the table.
b
B represents the unstandardized coefficient.
c
Per 1-unit increase.