Table 3. Multivariate logistic regression analysis to identify factors associated with high risk of suicide.
| Adjusted OR | (95% CI) | P value | |
|---|---|---|---|
| Sex | |||
| boy | Reference | ||
| girl | 1.250 | 1.174 to 1.330 | <0.001 |
| School grade | |||
| G1 | Reference | ||
| G2 | 0.911 | 0.829 to 1.000 | 0.051 |
| G3 | 0.767 | 0.697 to 0.844 | <0.001 |
| G4 | 0.531 | 0.479 to 0.590 | <0.001 |
| G5 | 0.532 | 0.480 to 0.589 | <0.001 |
| G6 | 0.447 | 0.403 to 0.497 | <0.001 |
| City type | |||
| countryside | Reference | ||
| small/medium-sized cities | 0.655 | 0.595 to 0.720 | <0.001 |
| big cities | 0.674 | 0.612 to 0.741 | <0.001 |
| Academic achievement | |||
| high | Reference | ||
| high middle | 0.766 | 0.695 to 0.844 | <0.001 |
| middle | 0.801 | 0.728 to 0.882 | <0.001 |
| low middle | 0.909 | 0.824 to 1.004 | 0.059 |
| low | 0.859 | 0.765 to 0.964 | 0.010 |
| Family structure | |||
| live with both parents | Reference | ||
| live with one parent | 1.116 | 1.020 to 1.222 | 0.017 |
| neither | 1.081 | 0.971 to 1.204 | 0.155 |
| Family SES | |||
| high | Reference | ||
| high middle | 0.822 | 0.743 to 0.909 | <0.001 |
| middle | 0.804 | 0.728 to 0.882 | <0.001 |
| low middle | 1.023 | 0.910 to 1.152 | 0.699 |
| low | 1.094 | 0.920 to 1.300 | 0.308 |
| Education, father | |||
| unknown | 0.844 | 0.767 to 0.929 | 0.001 |
| middle school graduate or less | 1.003 | 0.817 to 1.230 | 0.981 |
| high school graduate | 0.967 | 0.894 to 1.046 | 0.406 |
| college or graduate degree | Reference | ||
| Education, mother | |||
| unknown | 0.911 | 0.827 to 1.005 | 0.062 |
| middle school graduate or less | 1.075 | 0.868 to 1.331 | 0.508 |
| high school graduate | 0.852 | 0.790 to 0.918 | <0.001 |
| college or graduate degree | Reference | ||
| Current smoking (yes) | 1.235 | 1.097 to 1.391 | <0.001 |
| Current alcohol drinking (yes) | 1.184 | 1.093 to 1.282 | <0.001 |
| Substance use (yes) | 1.932 | 1.523 to 2.450 | <0.001 |
| Physical activity | |||
| active | Reference | ||
| inactive | 0.879 | 0.827 to 0.935 | <0.001 |
| Obesity | |||
| normal | Reference | ||
| underweight | 1.089 | 0.980 to 1.210 | 0.113 |
| overweight | 0.767 | 0.636 to 0.924 | 0.005 |
| obesity | 0.937 | 0.862 to 1.018 | 0.122 |
| Sexual experience (yes) | 1.193 | 1.054 to 1.351 | 0.005 |
| Internet addiction (yes) | 1.230 | 0.911 to 1.660 | 0.177 |
| Sadness (yes) | 6.464 | 6.083 to 6.868 | <0.001 |
| Stress | |||
| very high | 1.626 | 1.398 to 1.892 | <0.001 |
| high | 0.843 | 0.729 to 0.975 | 0.021 |
| middle | 0.360 | 0.311 to 0.416 | <0.001 |
| low | 0.182 | 0.151 to 0.218 | <0.001 |
| very low | Reference | ||
| Self-rated health | |||
| very good | Reference | ||
| good | 1.116 | 1.030 to 1.208 | 0.007 |
| normal | 1.537 | 1.409 to 1.677 | <0.001 |
| poor | 2.009 | 1.794 to 2.249 | <0.001 |
| very poor | 2.901 | 2.131 to 3.950 | <0.001 |
| Sleep satisfaction | |||
| very high | Reference | ||
| high | 0.690 | 0.604 to 0.788 | <0.001 |
| middle | 0.777 | 0.688 to 0.877 | <0.001 |
| low | 0.851 | 0.753 to 0.961 | 0.010 |
| very low | 0.883 | 0.776 to 1.005 | 0.059 |
| Self-rated weight | |||
| very thin | Reference | ||
| thin | 0.446 | 0.395 to 0.503 | <0.001 |
| normal | 0.426 | 0.380 to 0.478 | <0.001 |
| fat | 0.501 | 0.421 to 0.598 | <0.001 |
| very fat | 0.578 | 0.476 to 0.703 | <0.001 |
| Distorted weight perception (yes) | 0.967 | 0.828 to 1.129 | 0.671 |
| School injury (yes) | 1.078 | 1.012 to 1.148 | 0.020 |
| Violence (yes) | 2.317 | 2.014 to 2.666 | <0.001 |
| Asthma (yes) | 1.022 | 0.929 to 1.124 | 0.653 |
| Allergic rhinitis (yes) | 0.988 | 0.930 to 1.050 | 0.702 |
| Atopic dermatitis (yes) | 1.053 | 0.987 to 1.122 | 0.117 |
Note. SES: socio-economic status