Abstract
Some researchers have emphasized that, from the perspective of suicide prevention, research into the methods of suicide seemed to be particularly promising, as it has been shown repeatedly that restricting access to the prevailing method of suicide in a country will decrease suicide rates and that the lethality of the method used significantly correlated with the degree of intention to die. In this study, we examined changes in choice of method and the lethality score between the last attempted suicide (LAS) and completed suicide (CS) in 416 victims (male: 197, female: 219) to point out the tendency on their choice of method in LAS and CS. There was a significant difference in choice of suicide method between LAS and CS, and injury to themselves (33.7%) was the most common method of LAS, while hanging (37.5%) was the most common method of CS. The mean lethality score of CS method was significantly higher than that of LAS method in both sex groups, suggesting that at least one of the causes that drives suicide attempters to commit suicide finally may be the difference in the lethalities of LAS and CS. At the time of CS, suicidal victims tend to choose the same method as that of LAS again. These findings suggest that although suicide attempters tend to choose the same method, they will use a more lethal method if they change the suicide method. Interestingly, moreover, there was no sex difference in the percentage of the mean lethality score at CS.
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