Assessing Vulnerability to Surges in Suicide-Related Tweets Using Japan Census Data: Case-Only Study

Area of Science:

• Social Sciences
• Public Health
• Digital Communication

Background:

• Social media's pervasive influence necessitates understanding its impact on public health.
• Limited research exists on the connection between social media use and suicide vulnerability.
• Prevalence of suicide-related content online exacerbates the need to identify at-risk individuals.

Purpose of the Study:

• To identify characteristics of individuals vulnerable to suicide due to increased suicide-related tweets.
• To contribute to public health strategies by understanding social media's role in suicide.
• To analyze the interaction between social media trends and personal risk factors for suicide.

Main Methods:

• A case-only study design analyzed suicide mortality data and tweet data (2011-2014).
• Logistic regression modeled interactions between surges in suicide-related tweets and victim characteristics.
• Sensitivity analysis used unexpected deaths to confirm specificity of findings to suicide.

Main Results:

• Significant interactions between increased suicide-related tweets and vulnerability were found for individuals aged 40 or younger, males, divorced, and unemployed individuals.
• Widowed individuals showed significantly lower interaction with suicide-related tweets.
• Findings were specific to suicide deaths, as confirmed by sensitivity analysis.

Conclusions:

• Personal characteristics like age, gender, marital status, and employment influence vulnerability to suicide-related social media content.
• Younger, male, unemployed, and divorced individuals are particularly susceptible to surges in online suicide discussions.
• Identifying and supporting vulnerable populations exposed to online suicide information is crucial for public health.