1 | Bicycling/ or (bicycl* or bike* or cyclist or cycling).mp. (50 000) |
2 | accident prevention/ or safety/ or safety management/ or accidental falls/ or accidents, traffic/ or safety.ti,ab. (256 850) |
3 | program evaluation/ or Education/ or Educational Measurement/ or ed.fs. or questionnaires/ or health education/ or (educat* or train* or teach or intervention* or class or classes or program* or campaign* or skill*).mp. (1968088) |
4 | 1 and 2 and 3 (618) |
5 | clinical trial/ or cohort studies/ or longitudinal studies/ or follow-up studies/ or prospective studies/ or (case–control studies/ or retrospective studies/ or cross-sectional studies/) or (prognosis/ or disease-free survival/ or medical futility/ or pregnancy outcome/ or treatment outcome/ or treatment failure/) or disease progression/ or (morbidity/ or incidence/ or prevalence/) or (mortality/ or cause of death/ or fatal outcome/ or hospital mortality/ or infant mortality/ or maternal mortality/ or survival rate/) or (survival analysis/ or disease-free survival/) or natural histor.tw. or predictive value of tests/ or (multicenter study.pt. or multicenter studies as topic/) or (randomised controlled trial.pt. or randomised controlled trials as topic/) (2662968) |
6 | 1 and 2 and 5 (723) |
7 | 4 or 6 (1055) |
8 | limit 7 to “all child (0 to 18 years)” (657) |
9 | (child* or teen* or adolescen* or youth* or paediatric* or pediatric*).mp. (2404956) |
10 | 7 and 9 (678) |
11 | 8 or 10 (680) |