Background Despite decades of research to better understand suicide risk and to develop detection and prevention methods, suicide is still one of the leading causes of death globally. While large-scale studies using real-world evidence from electronic health records can identify who is at risk, they have not been successful at pinpointing when someone is at risk. Personalized social media and online search history data, by contrast, could provide an ongoing real-world datastream revealing internal thoughts and personal states of mind. Objective We conducted this study to determine the feasibility and acceptability of using personalized online information-seeking behavior in the identification of risk for suicide attempts. Methods This was a cohort survey study to assess attitudes of participants with a prior suicide attempt about using web search data for suicide prevention purposes, dates of lifetime suicide attempts, and an optional one-time download of their past web searches on Google. The study was conducted at the University of Washington School of Medicine Psychiatry Research Offices. The main outcomes were participants’ opinions on internet search data for suicide prediction and intervention and any potential change in online information-seeking behavior proximal to a suicide attempt. Individualized nonparametric association analysis was used to assess the magnitude of difference in web search data features derived from time periods proximal (7, 15, 30, and 60 days) to the suicide attempts versus the typical (baseline) search behavior of participants. Results A total of 62 participants who had attempted suicide in the past agreed to participate in the study. Internet search activity varied from person to person (median 2-24 searches per day). Changes in online search behavior proximal to suicide attempts were evident up to 60 days before attempt. For a subset of attempts (7/30, 23%) search features showed associations from 2 months to a week before the attempt. The top 3 search constructs associated with attempts were online searching patterns (9/30 attempts, 30%), semantic relatedness of search queries to suicide methods (7/30 attempts, 23%), and anger (7/30 attempts, 23%). Participants (40/59, 68%) indicated that use of this personalized web search data for prevention purposes was acceptable with noninvasive potential interventions such as connection to a real person (eg, friend, family member, or counselor); however, concerns were raised about detection accuracy, privacy, and the potential for overly invasive intervention. Conclusions Changes in online search behavior may be a useful and acceptable means of detecting suicide risk. Personalized analysis of online information-seeking behavior showed notable changes in search behavior and search terms that are tied to early warning signs of suicide and are evident 2 months to 7 days before a suicide attempt.

Objective Murder‐suicide is a rare and especially tragic form of violence. Nascent literature has characterized murder‐suicide perpetrated by adults, but no study has focused on adolescents who perpetrated murder‐suicide. Method This study evaluated all cases of murder‐suicide perpetrated by persons under age 21 who were included in the National Violent Death Reporting System, and categorized each incident using Joiner’s perversion of virtue framework of murder‐suicide. Results Forty‐seven incidents of murder‐suicide perpetrated by adolescents were identified, representing 56 victims. Most cases did not have sufficient information to be categorized within a particular perversion of virtue. Among the 20 cases who did have sufficient detail to be categorized, incidents were identified as perversions of self‐control (n = 11), justice (n = 8), and mercy (n = 1). Most perpetrators were male, and the majority of victims were female. Additional victim, perpetrator, and incident characteristics are described. Conclusions Our findings extend previous work by employing a coding system based on a theoretically derived framework for categorizing “genuine” murder‐suicide and related behavior among adolescents. This study also characterized the nature of this complex and tragic sequence of behavior among adolescents, who are at elevated risk of suicide, and who may benefit from prevention efforts that effectively address means safety, suicidality, and intimate partner violence.

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