Completed suicide and associated risk factors: a six-year population based survey

The investigations on suicide conducted within low- and middle-income countries are limited. This study evaluated the trend of suicide and its associated risk factors in the west of Iran.

This six-year population-based survey was conducted in Kermanshah Province, in 2012. The data on suicide was extracted from the suicide database of the Provincial Health Center, which was collected for six successive years. Multivariate logistic regression analysis was performed and odds ratio (OR) as well as its 95% confidence intervals (CI) was reported.

During the study period, 13,810 attempted suicides occurred of which 1,564 (11.33%) were completed. The incidence rate of suicide has increased in recent years. Based on logistic regression analysis, OR estimate of completed suicide increased 1.46 (95% CI: 1.36, 1.56) fold for every 10-year increase in age. Moreover, OR estimate of completed suicide was 2.53 (95% CI: 1.94, 3.31) in men compared to women. Compared to married people, the OR estimate of completed suicide was 1.41 (95% CI: 1.15, 1.72) in single people, 1.92 (95% CI: 1.15, 3.23) in widowed people, and 1.97 (1.32, 2.95) in divorced people. The lower the educational level, the higher the risk of completed suicide. Compared to school/college students, the risk of completed suicide was higher among housewives, employed people or employees, and retirees. A majority of the suicides (90.05%) occurred at home. Taking medications was the most common way (69.13%) of a suicide attempt.

We indicated that associated factors with completed suicide vary in Iran compared to other developed and developing countries and that factors associated with attempted suicide are different from that of completed suicide.