Nonresponse to an item assessing firearm ownership: Associations with suicide risk and emotional distress.

Introduction: Firearms account for more than half of suicide deaths in the United States (US) and both ownership and access are associated with increased risk of intentional and unintentional injury. Despite evidence linking ownership and access to suicide risk, individuals may be reticent to answer questionnaire items assessing ownership. The current study examined characteristics of individuals who do not provide a response (nonresponders) to a firearm ownership item in a community sample.

Methods: Data were collected from a cross-sectional online survey of 10,625 US adults. Univariate and multivariate analyses were conducted to examine demographic, emotional distress, and suicide risk differences across three groups (firearm owners, nonowners, and nonresponders).

Results: Nonresponders were significantly younger, more likely to be female and non-White than firearm owners and nonowners. Nonresponders were less likely to endorse recent suicidal ideation and probable PTSD than firearm owners, but more likely to endorse probable PTSD than nonowners. Firearm owners were significantly more likely to report several correlates of suicide risk than nonowners.

Conclusions: Nonresponders may be a unique subgroup with distinct demographic, emotional distress, and suicide risk profiles compared to both firearm owners and nonowners. Implications of these findings for future directions are discussed.