Llewellyn 2003.

Methods	RCT
Participants	Parents with intellectual disability who were the primary carers of children < 5 years
Interventions	I1= weekly home visits covering a different topic each week e.g. fire, electrical safety. I2= lesson books received by mail covering the same topics as I1 but without face to face contact C1 = current community services C2 = current community services
Outcomes	Outcomes measured over 3 months: Mean (SD) hazard score comprising precautions taken to deal with 114 possible dangers in and around the home 1st post programme assessment: I1 = 60.35 (21.94) versus I2 = 48.73 (10.77) versus C1 = 53.3 (12.88), P < 0.001 2nd post programme assessment: I2 = 88.09 (34.92) versus C1 = 57.5 (11.48), P < 0.001
Notes	Blinding ‐ y Outcomes 80% ‐ n Balance ‐ n/a C2 initially randomly allocated but reallocated to C1 to ensure completed program in study period
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	Unclear