Association of firearm exposure during youth with lifetime incidence of suicide ideation and suicide attempts

Abstract Background: Preliminary evidence suggests firearm availability may increase the risk for suicide ideation and attempts, two common precursors to suicide death. Little is known about which aspects of firearm availability may account for this association. The primary purpose of this study was to examine associations among multiple dimensions of firearm availability with lifetime history of suicide ideation and attempts.Methods: A cross-sectional, anonymous survey was administered to 6200 U.S. adults from March 5, 2020, to March 17, 2020. Participants were asked to report firearm availability, firearm use, and suicidal thoughts and behaviors over the lifespan. Results: Rates of lifetime suicide ideation were significantly elevated among participants reporting a firearm in their childhood home (odds ratio [OR]=1.3, 95% confidence interval [CI]=1.1-1.5). Rates of lifetime suicide attempt were significantly elevated among participants reporting a firearm in their childhood home (OR=1.8, 95% CI=1.5-2.2) and participants who first acquired a firearm before the age of 11 (OR=3.8, 95% CI=2.6-5.8). Among participant with a lifetime history of suicide ideation, rates of lifetime suicide attempt were significantly elevated among participants who first acquired a firearm before the age of 11 (OR=3.0, 95% CI=1.4-6.4), but this relationship was no longer significant when adjusting for demographics and negative affectivity (OR=2.4, 95% CI=0.96-6.0). Conclusions: Adults who were raised in a home with a firearm and/or first acquired a firearm were significantly more likely to have attempted suicide during their lives. Additional research examining the mechanisms by which early life firearm exposure might increase suicide risk across the lifespan is warranted.