Fig. 5. Forest plot of odds ratios (and their 95% confidence intervals and p value < 0.01, the size of the square is proportional to the negative log p value) for the comparison between the <25-year-old age group and the 25–54-year-old age group.

Past suicide attempt is the strongest risk factor for the age group of 25–54, while mental disorders like personality disorder, substance abuse, and bipolar disorder also have more influence on this age group. In the younger group, the physiological defects and the pain-related disorders are stronger predictors.