Rush D, Cassano P
J Epidemiol Community Health. 1983 Dec;37(4):249-55. doi: 10.1136/jech.37.4.249.
The joint associations of maternal cigarette smoking and social class on perinatal outcome were studied in the 1970 British birth cohort (British Births). Whereas smoking was much more frequent among women in social classes III, IV, and V, there was little difference in the birthweight decrement associated with smoking across class. Perinatal mortality, however, was increased only among smokers in the manual social classes. Thus whereas the offspring of more privileged smokers were not protected from intrauterine growth retardation, they did not suffer from increased perinatal mortality. Observations of other populations suggest a possible nutritional mediation of this protective effect.
在1970年英国出生队列(英国出生情况)中研究了母亲吸烟与社会阶层对围产期结局的联合影响。尽管社会阶层为III、IV和V的女性吸烟更为频繁,但不同阶层中与吸烟相关的出生体重下降差异不大。然而,围产期死亡率仅在体力劳动者社会阶层的吸烟者中有所增加。因此,虽然享有更多特权的吸烟者的后代未能免受宫内生长迟缓的影响,但他们并未遭受围产期死亡率增加的情况。对其他人群的观察表明,这种保护作用可能通过营养介导。