Kawahara YY, et al. - This retrospective one-year cohort study aimed to investigate predictors of the repetition of short-term self-harm (<1 month and <6 months) among the patients who were admitted to an emergency department in Japan following self-harm. Findings revealed that patients who live alone were at risk for repetition within one and six months whereas poorer socioeconomic status was at risk for repetition within six months. These risk factors should be included in routine assessment at an emergency room, and elaborate follow-up plan should be given to the patients with these risk factors upon discharge from the emergency room.