Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Incidence of deliberate self-harm
RCT	120 adults aged 18 to 66 years, enrolled within 48 hours of admission to hospital after an episode of deliberate self-harm	Incidence of deliberate self-harm 24% (estimated proportion based on last observation carried forward) with cognitive therapy (10 outpatient sessions) plus usual care 42% (estimated proportion) with usual care Absolute numbers not reported	P = 0.046	Effect size not calculated	cognitive therapy plus usual care
Episodes of deliberate self-harm
RCT	120 adults aged 18 to 66 years, enrolled within 48 hours of admission to hospital after an episode of deliberate self-harm	Episodes of deliberate self-harm with cognitive therapy (10 outpatient sessions) plus usual care with usual care Absolute results not reported	HR 0.51 95% CI 0.26 to 0.997 P = 0.045	Small effect size	cognitive therapy plus usual care
RCT	120 adults aged 18 to 66 years, enrolled within 48 hours of admission to hospital after an episode of deliberate self-harm	Episodes of deliberate self-harm with cognitive therapy (10 outpatient sessions) plus usual care with usual care Absolute results not reported	Controlled for baseline depression scores: HR 0.47 95% CI 0.24 to 0.93 P = 0.03	Moderate effect size	cognitive therapy (10 outpatient sessions) plus usual care
RCT	120 adults aged 18 to 66 years, enrolled within 48 hours of admission to hospital after an episode of deliberate self-harm	Episodes of deliberate self-harm with cognitive therapy (10 outpatient sessions) plus usual care with usual care Absolute results not reported	Controlled for age, sex, and minority status HR 0.52 95% CI 0.26 to 1.02 P = 0.06		Not significant