Drabek 1991.

Methods	CBA (clustered by session date).
Participants	48 (33 analysed) faculty members with full‐time appointments, aged 27 to 66 years. 24 (20 analysed) student‐service personnel, aged 25 to 56 years. University of South Dakota, USA.
Interventions	Intervention: 90‐minute suicide prevention program with didactic and experiential components (i.e. discussion regarding case scenarios of at‐risk students; 19 faculty and 14 student‐service personnel). Delayed treatment control group: same intervention delayed until after completion of initial post‐tests (14 faculty and 6 student‐service personnel).
Outcomes	10‐item (5‐point Likert scale, 1 "strongly agree" to 5 "strongly disagree") SOQ‐AF, 13‐item Recognition of Suicide Lethality Scale (RSL), 33‐item (true/false) Quiz on Knowledge of Suicide (QKS), 18‐item Assessment of Appropriate Responses Scale (AARS). All outcomes measured pre‐intervention and 1 week post‐intervention (or comparable timing for delayed treatment controls).
Notes	Reliability for the SOQ‐AF was 0.79. Cronbach's alpha for the RSL was 0.65.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Not used.
Allocation concealment (selection bias)	High risk	Not used.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Insufficient information provided.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Outcomes were self‐reported.
Incomplete outcome data (attrition bias) All outcomes	High risk	53/72 participants provided sufficient data for analyses; reasons for dropout were not reported.
Selective reporting (reporting bias)	Unclear risk	Insufficient information provided.
Other bias	High risk	Participants were assigned to a group by the investigators based on the session date that they self‐selected to attend.