Utilizing data as well as factor analysis & multiple regression results from a previously published study, this follow-up study examined gender differences in risk factors that increase the probability of self-reported suicidal behaviour among 7th- through 12th-graders (n=3461) in a northern Midwest school district. The logistic regression results revealed significant gender differences in that the demonstration of more aggressive behaviours increased the likelihood of males reporting suicidal behaviour. (27 refs.)