Position on the moped, risk of head injury and helmet use: an example of confounding effect.
Lardelli-Claret
Pablo
P
Luna-del-Castillo
Juan de Dios
Jde D
Jiménez-Moleón
José Juan
JJ
D000063:Accidents, Traffic; D015986:Confounding Factors, Epidemiologic; D006259:Craniocerebral Trauma / Q000209:etiology*; D006260:Head Protective Devices; D006801:Humans; D009049:Motorcycles; D012307:Risk Factors