Thinking about dying and trying and intending to die: Results on suicidal behavior from a large web-based sample.

Suicide is an important worldwide public health problem. The aim of this study was to characterize risk factors of suicidal behavior using a large Web-based sample. This large Web survey confirmed results from previous studies on suicidal behavior and pointed out the relevance of the number of previous suicide attempts and of a positive family history, even for a noncompleted suicide, as important risk factors.