第一个,欧洲2006年的统计数字:
In a 2006 European study, the risk of developing lung cancer was:
0.2% for men who never smoked (0.4% for women)
5.5% for male former smokers (2.6% in women)
15.9% for current male smokers (9.5% for women)
24.4% for male “heavy smokers” defined as smoking more than 5 cigarettes per day (18.5% for women)
再随机找出1000个每天吸烟超过5支的男人,得肺癌的几率是244个人;
再随机找出1000个吸烟的男人,得肺癌的几率是172个人;