Luby 2003a PAK.

Methods	Cluster‐RCT Allocation sequence: computer‐generated Allocation concealment: serially numbered Blinding: none Inclusion of participants in the analysis: unclear Length of follow‐up: 12 months Cluster‐adjustment method: adjusted
Participants	Number: 36 neighbourhoods (25 intervention, 11 control), with 4691 children (3163 intervention, 1528 control) Inclusion criteria: household located in the trial area; have at least 2 children < 5 years; intention to reside in the house for the duration of trial Exclusion criteria: not stated Age: < 15 years
Interventions	Intervention (see Table 5 for detailed description): Large group training using slide shows, pamphlets, and video tapes Control: No intervention
Outcomes	Diarrhoeal rates
Notes	Location: low‐income squatter settlements, Karachi, Pakistan Duration: April 2002 to April 2003
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Adequate.
Allocation concealment (selection bias)	Low risk	Adequate.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not described.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not described.
Incomplete outcome data (attrition bias) All outcomes	Low risk	139 children from the intervention arm and 85 from the control arm out of the 4691 children originally enrolled were lost to follow‐up.
Selective reporting (reporting bias)	Low risk	None observed.
Other bias	Low risk	None observed.