| Methods |
RCT. The analysis was not undertaken blind to treatment group. Data relating to completeness of follow‐up not presented but it appears that outcomes are reported for all families allocated. Assessment of the distribution of confounders limited to age and whether family member owns helmet. The differences were not statistically significant. |
| Participants |
576 five to18 year‐olds from 339 families presenting for a routine ambulatory visit at clinics in Canada |
| Interventions |
Helmet promotion counselling session from clinicians. The control group received none of the above interventions. |
| Outcomes |
Self reported helmet ownership. Measured at 2 to 3 weeks. |
| Notes |
Families are the unit of randomisation and analysis in this study. The outcome used in this analysis is the number of families buying helmets as a result of the intervention. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Allocation concealment (selection bias) |
Unclear risk |
Unclear |
