Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Repetition of deliberate self-harm
Systematic review	People admitted to hospital after deliberate self-harm, 30%–100% with a previous history of deliberate self-harm 6 RCTs in this analysis	Repetition of deliberate self-harm 4 to 12 months 92/580 (16%) with intensive intervention 107/581 (18%) with treatment as usual	Peto OR 0.84 95% CI 0.62 to 1.15 P = 0.28		Not significant
RCT	1867 suicide attempters enrolled in the emergency departments of 5 participating sites (culturally diverse settings) Further report of reference	Repeated suicide attempts 18 months 66/863 (7.6%) with brief intervention and contact 60/800 (7.5%) with usual care	Reported as not significant P = 0.909		Not significant
RCT	243 people aged 11–69 years (mean age 31) with recent (within last 14 days) suicide attempts	Proportion of participants with suicide re-attempts (based on hospital records) 1 year 20/123 (16%) with intensive intervention 13/120 (11%) with usual care	OR 1.60 95% CI 0.76 to 3.38 P = 0.22		Not significant
RCT	64 adults aged >18 years contacted within 3 days of presenting to hospital with an episode of self-harm	Proportion of participants with self-harm repetition 12 months 11/32 (34%) with intensive intervention 4/32 (13%) with usual care	OR 3.67 95% CI 1.0 to 13.1 P = 0.046	Moderate effect size	usual care
Suicide
RCT	1867 suicide attempters enrolled in the emergency departments of 5 participating sites (culturally diverse settings); median age 23 years	Proportion of participants dying by suicide 18 months 2/872 (0%) with brief intervention and contact 18/827 (2%) with treatment as usual	P <0.001	Effect size not calculated	brief intervention and contact
RCT	243 people aged 11–69 years (mean age 31) with recent (within last 14 days) suicide attempts	Proportion of participants dying by suicide 1 year 1/123 (0.8%) with intensive intervention 0/120 (0%) with usual care	Not reported
RCT	64 adults aged >18 years contacted within 3 days of presenting to hospital with an episode of self-harm	Proportion of participants dying by suicide 12 months 1/32 (3%) with intensive intervention 0/32 (0%) with usual care	Not reported
Admission to hospital
RCT	64 adults aged >18 years contacted within 3 days of presenting to hospital with an episode of self-harm	Psychiatric hospital admissions 12 months 1/32 (3%) with intensive intervention 2/32 (6%) with usual care	Not reported