[22] However, age has a bearing on the curve: younger people are less active in sport and do not smoke, whereas more intensive athletes are generally older and part of the groups in which the incidence of smoking is highest.
[22] Mais cette courbe est due à un effet de l’âge : les plus jeunes pratiquent moins et ne fument pas, alors que les pratiquants les plus intensifs sont en général plus âgés et appartiennent aux groupes qui fument le plus.