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Posttraumatic Stress Disorder Content on TikTok: Cross-Sectional Analysis of Popular #PTSD Posts

Posttraumatic Stress Disorder Content on TikTok: Cross-Sectional Analysis of Popular #PTSD Posts

Previous work shows that group identification (in vs out) is a primary theme of PTSD-specific discussion on internet forums and may serve to reproduce team-based military environments or facilitate “safe” social engagement despite characteristic feelings of detachment or estrangement from other people in general (Criterion D) [11]. Research has shown that aspects of online behavior can become incorporated into users’ identities [29].

Brittany Rohl, Laura Carolyn Jones, Rachel Nattis, Robert Dale Claar, Xavier Velez, Joy Gabrielli, John Williamson, Eric Porges

Online J Public Health Inform 2025;17:e71209


Testing the Efficacy of a Web-Based Intervention for Loss and Bereavement in Later Life (AgE-health Study): Results From a Randomized Controlled Trial

Testing the Efficacy of a Web-Based Intervention for Loss and Bereavement in Later Life (AgE-health Study): Results From a Randomized Controlled Trial

On the basis of previous comparable trials using the PG-13 as primary outcome [26,28,52], a moderate effect size of Cohen d=0.5 was considered to power the trial. Given a significance level of α=.05 and a statistical power of 1–β=.8, the optimal sample size to detect a moderate between-group effect at 4-month follow-up was calculated to be 128 (n=64, 50% per group). Considering a dropout rate of 25% based on previous trials [53,54], an initial sample size of 170 participants at baseline was aimed for.

Franziska D Welzel, Alexander Pabst, Janine Stein, Franziska Bleck, Steffi G Riedel-Heller, Margrit Löbner

J Med Internet Res 2025;27:e68662