Variables derived from the questionnaire data
| • Age | • Helmet promotion from: |
| • Sex | School nurse |
| • County | Teacher |
| • School | Youth worker |
| • Rides a bicycle | Doctor |
| • Helmet ownership | Police |
| • Helmet use | Road safety advisor |
| • Parental encouragement | • Attended proficiency course |
| • Parental helmet use | • Beliefs (social consequences): |
| • Friends wear a helmet | Laughing/teasing |
| • Closest friend wears a helmet | Less fun to ride |
| • Time spent riding | Poor appearance |
| • Riding: | • Belief (physical consequences): |
| For fun | Can save lives |
| To get to school | Protects against injury |
| To do a paper round | • Beliefs (other): |
| For a sporting activity | Helmets cost too much |
| To your friend's home | Helmets not comfortable |
| For other reasons | Helmet laws are good |
| • Riding: | • Attitude: |
| On roads | Rather not ride if have to wear a helmet |
| Off-road | |
| To and from school |