Mental health conditions were reported in the Risk Behavior Instrument based on (1) a physician report (ever) of any one of three clinical mental health outcomes (depression, schizophrenia, or mania), or (2) a participant self-report of thoughts of suicide within the previous 12 months. About
13% of females reported they had received a clinical diagnosis of depression at some point in the past, and 4% said they had thoughts of suicide in the previous year. The prevalence of both conditions was lower among male participants: just 2% said they been diagnosed with clinical depression, and 2% admitted to thoughts of suicide within the past 12 months. Only for the reported clinical diagnosis of depression was there a statistically significant difference in prevalence between female and male participants (P < 0.05, chi-squared test).