Validation of two child passenger safety questionnaires.


OBJECTIVE To measure the validity of a booster seat questionnaire and a car seat questionnaire so that they can be reliably used in future trials. DESIGN The two child passenger safety questionnaires were created. Each underwent expert review to ensure face and content validity. Two reliability studies were conducted independently of each other. Care… (More)
DOI: 10.1136/ip.2009.022681


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