TAPESTRY Dublin 2003.

Methods	Design: Controlled before‐after study Duration of follow‐up:1 month
Participants	Country: Ireland Setting: Urban and rural primary schools Intervention group: 4 schools, 230 baseline responses Control group: 2 schools, 38 baseline responses Age 11‐12 years. Gender not reported
Interventions	Walk to school week ‐ information packs for students and parents ‐ other promotional material on walking to school (posters etc.) ‐ children walking or cycling to school were eligible for prizes, as were schools ‐ additional infrastructure for walking/cycling in conjunction with campaign Duration of intervention: 1 week
Outcomes	Usual mode of travel to school Effects on inequalities not reported. Adverse effects not reported.
Notes	Parts of report very poorly written and structured, and difficult to interpret
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	High risk	Not randomised
Allocation concealment?	High risk	Not randomised
Blinding? All outcomes	High risk	Not feasible. Could have influenced outcomes
Incomplete outcome data addressed? All outcomes	Low risk	100% response rate at follow up survey
Free of selective reporting?	Unclear risk	Not clear that all pre‐specified outcomes were included
Free of other bias?	High risk	Apparently inconsistent results reported in paper without clear explanation. Possible errors in data or reporting. A further school class was added at the time of the follow up survey
Adequate matching of intervention / control groups?	High risk	Baseline travel mode differed substantially between intervention and control groups. Baseline car use was 44% in intervention schools and 78% in control schools. Intervention schools were within the city limits, while control schools were outside the jurisdiction of the city council and appeared to be rural.