No significant increase was seen for ETS in childhood or the workplace or from the spouse specifically, but an increase was seen for total exposure (RR = 1.54, 95% CI = 1.17-2.04, n = 6).

• 对孩提时代、工作场所或婚后暴露于环境菸烟并无显著增加情形，但却与总暴露量有显著相关性(RR=1.；54；95%25CI=1