Kleinman J C, Kopstein A
Am J Public Health. 1987 Jul;77(7):823-5. doi: 10.2105/ajph.77.7.823.
Data from two national samples of live births to married mothers (the 1967 and 1980 National Natality Surveys) were used to document changes in smoking during pregnancy. Smoking among married teenagers remained essentially constant between 1967 and 1980. For married mothers age 20 and over, the prevalence of smoking during pregnancy decreased from 40 to 25 per cent among Whites and 33 to 23 per cent among Blacks. There were striking differences in the magnitude of the decrease by educational attainment. Among the White married mothers age 20 and over, the prevalence of smoking during pregnancy decreased from 48 to 43 per cent for those with less than 12 years education and from 34 to 11 per cent for those with 16 or more years education.
来自两个全国已婚母亲活产样本(1967年和1980年全国出生情况调查)的数据被用于记录孕期吸烟情况的变化。1967年至1980年间,已婚青少年吸烟率基本保持不变。对于20岁及以上的已婚母亲,白人孕期吸烟率从40%降至25%,黑人从33%降至23%。按教育程度划分,下降幅度存在显著差异。在20岁及以上的白人已婚母亲中,受教育年限不足12年的母亲孕期吸烟率从48%降至43%,而受教育年限为16年及以上的母亲则从34%降至11%。