Postgraduate Program in Epidemiology, Universidade Federal de Pelotas, Rua Marechal Deodoro, 1160 - 3° andar, Pelotas, RS, 96020-220, Brazil.
Programa de Pós-Graduação em Saúde Pública, FURG, Rio Grande, RS, Brazil.
Int J Public Health. 2020 Mar;65(2):207-215. doi: 10.1007/s00038-019-01328-8. Epub 2020 Feb 10.
To estimate and assess pregnancy smoking trends since 1978, according to sociodemographic characteristics, in three Brazilian sites.
We used cross-sectional data from the perinatal studies of nine birth cohorts, located in the southeast (Ribeirão Preto-1978/1979, 1994, and 2010), south (Pelotas-1982, 1993, 2004, and 2015), and northeast (São Luís-1997/1998 and 2010) regions of Brazil. We estimated the prevalence of pregnancy smoking at each time point according to age, education, and family income, in each cohort, and evaluated smoking trends.
We analyzed data of 17,275 women in Ribeirão Preto, 19,819 in Pelotas, and 7753 in São Luís. Smoking decreased by 59% in Ribeirão Preto (p < 0.001), 54% in Pelotas (p < 0.001), and 32% in São Luís (p < 0.001). However, among those with 0-4 years of education, smoking did not change in Ribeirão Preto (p-trend = 0.501) nor São Luís (p = 0.556) and increased in Pelotas (p-trend = 0.003).
Pregnancy smoking has been declining during the last decades. However, among less-educated women, pregnancy smoking did not change in two sites and increased in one of them.
根据社会人口学特征，评估巴西三个地区自 1978 年以来的妊娠吸烟趋势。
我们使用了来自巴西东南部（累西腓-1978/1979 年、1994 年和 2010 年）、南部（佩洛塔斯-1982 年、1993 年、2004 年和 2015 年）和东北部（圣路易斯-1997/1998 年和 2010 年）三个地区九个出生队列的围产期研究的横断面数据。我们根据每个队列中每个时间点的年龄、教育程度和家庭收入，估计了妊娠吸烟的流行率，并评估了吸烟趋势。
我们分析了累西腓 17275 名、佩洛塔斯 19819 名和圣路易斯 7753 名妇女的数据。吸烟率在累西腓下降了 59%（p<0.001），在佩洛塔斯下降了 54%（p<0.001），在圣路易斯下降了 32%（p<0.001）。然而，在受教育程度为 0-4 年的人群中，累西腓（p 趋势=0.501）和圣路易斯（p=0.556）的吸烟率没有变化，而佩洛塔斯的吸烟率则有所增加（p 趋势=0.003）。
在过去几十年中，妊娠吸烟率呈下降趋势。然而，在受教育程度较低的女性中，有两个地点的妊娠吸烟率没有变化，而其中一个地点的妊娠吸烟率有所增加。
