Multivariable logistic regression analysis for factors associated with high-lethality among patients with deliberate selfpoisoning (n=491)
| Variable | OR | 95% CI | p |
|---|---|---|---|
| Sex | |||
| Male | 1.00 | ||
| Female | 0.50 | 0.30-0.81 | 0.01 |
| Age (yr) | |||
| -29 | 1.00 | ||
| 30-39 | 0.71 | 0.30-1.67 | 0.43 |
| 40-49 | 0.74 | 0.34-1.60 | 0.44 |
| 50-59 | 0.93 | 0.44-1.93 | 0.84 |
| 60-69 | 0.66 | 0.26-1.65 | 0.37 |
| 70-79 | 1.80 | 0.73-4.42 | 0.20 |
| Visit time (hour) | |||
| 0-6 | 1.00 | ||
| 6-12 | 0.87 | 0.38-1.98 | 0.74 |
| 12-18 | 0.74 | 0.38-1.45 | 0.38 |
| 18-24 | 1.04 | 0.55-1.97 | 0.90 |
| Type of poisoning drug | |||
| Psychiatric drugs | 1.00 | ||
| Other prescribed drugs | 2.29 | 0.97-5.42 | 0.06 |
| OTC drugs | 2.49 | 1.08-5.74 | 0.03 |
| Herbicides | 8.65 | 3.91-19.13 | <0.01 |
| Trigger event | |||
| Interpersonal problems | 1.00 | ||
| Economic and social problems | 1.23 | 0.64-2.40 | 0.53 |
| Others | 1.37 | 0.68-2.78 | 0.38 |
| Unknown | 1.36 | 0.69-2.67 | 0.38 |
| Treatment consent | |||
| Refusing psychiatric treatment | 1.00 | ||
| Consenting to psychiatric treatment | 0.99 | 0.52-1.88 | 0.97 |
| Previous suicide attempts | |||
| No | 1.00 | ||
| Yes | 0.81 | 0.41-1.59 | 0.54 |
| Psychiatric treatment history | |||
| None | 1.00 | ||
| In treatment | 0.92 | 0.29-2.94 | 0.89 |
| Previous history | 0.36 | 0.08-1.55 | 0.17 |
| Blood alcohol levels (mg/dL) | |||
| 0 | 1.00 | ||
| -150 | 1.12 | 0.61-2.07 | 0.71 |
| >150 | 1.61 | 0.82-3.15 | 0.17 |
| Suicide intent expression | |||
| Admit | 1.00 | ||
| Denial | 0.28 | 0.15-0.55 | <0.01 |
| Unmeasured | 0.72 | 0.40-1.29 | 0.26 |
| Number of outpatient visits after discharge | |||
| 0 | 1.00 | ||
| 1-9 | 0.72 | 0.38-1.37 | 0.31 |
| 10- | 0.36 | 0.12-1.08 | 0.07 |
| Last psychiatric outpatient visit | |||
| None | 1.00 | ||
| Within one week | 1.62 | 0.39-6.66 | 0.51 |
| Within one month | 1.58 | 0.44-5.73 | 0.49 |
| More than one month | 2.69 | 0.67-10.88 | 0.17 |
| Previous psychiatric admission | |||
| None | 1.00 | ||
| Once | 1.12 | 0.44-2.88 | 0.81 |
| Multiple | 0.96 | 0.36-2.51 | 0.93 |
OR: odds ratios, CI: confidence intervals, OTC drug: over-the-counter drugs (medicines sold directly to a consumer without a requirement for a prescription from a healthcare professional
