Woolf 1992.

Methods	RCT (C) Allocated at level of day of recruitment
Participants	Families of children less than or equal to 5 years with a poisoning who contacted the poison control centre and did not have ipecac
Interventions	I = mailed $1 coupon for ipecac, one cupboard lock, checklist for poison proofing the home, leaflets C = none of the above
Outcomes	Outcomes measured over 3 months: Self reported repeat poisoning ‐ no significant difference. No figures or P value reported Possession of ipecac Poison centre number accessible Safe storage of cleaning products
Notes	Blinding ‐ y Outcomes 80% ‐ y Balance ‐ n/a
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	Unclear