Universidade de São Paulo, School of Public Health, Department of Epidemiology - São Paulo (SP), Brazil.
Universidade Federal da Integração Latino-Americana, Latin American Institute of Life and Natural Sciences - Foz do Iguaçu (PR), Brazil.
Rev Bras Epidemiol. 2024 Jul 29;27:e240040. doi: 10.1590/1980-549720240040. eCollection 2024.
To evaluate the distribution of the proportion of teenage mothers (PTM) in time and space and its relationship with socioeconomic indicators and social vulnerability.
An ecological study was carried out with teenage mothers living in 322 census tracts in Foz do Iguaçu (state of Paraná, Brazil) between 2013 and 2019. Spatial clusters of teenage mothers were identified by spatial scanning and grouped into strata with different prevalence. The association between these strata and the individual social vulnerability of the mothers was evaluated using the Pearson's Chi-square test. Linear regression models were adjusted to evaluate the association between PTM and socioeconomic factors by census tract and temporal trend in PTM in different strata.
We identified five high prevalence clusters in peripheral regions and six with low prevalence in the central region of the municipality. Proportionally, there were more teenage mothers with a worse vulnerability index in the high prevalence stratum than in the low prevalence stratum. Places with worse socioeconomic conditions present higher PTM, a profile that did not change over time. For the increase of one unit in the Brazilian Deprivation Index and proportion of women responsible for the household, the PTM increased, respectively, by 3.8 (95%CI 3.1-4.4) and 0.086% (95%CI 0.03-0.14). There was a reduction in the global PTM in part of the period, which occurred later in the higher prevalence strata, but the proportions were stable again in the last years of study.
Teenage pregnancy is concentrated in regions with worse socioeconomic conditions and greater maternal vulnerability and its behavior over time occurred differently in these areas.
评估少女母亲（PTM）的比例在时间和空间上的分布情况及其与社会经济指标和社会脆弱性的关系。
本研究采用生态研究方法，对 2013 年至 2019 年间生活在巴西巴拉那州福斯杜伊瓜苏市 322 个普查区的少女母亲进行了研究。通过空间扫描识别少女母亲的空间聚类，并将其分为不同流行率的分层。使用 Pearson's Chi-square 检验评估这些分层与母亲个体社会脆弱性之间的关系。通过调整线性回归模型，按普查区评估 PTM 与社会经济因素的关系，并评估不同分层中 PTM 的时间趋势。
我们在城市的外围地区发现了五个高流行率聚类，在市中心发现了六个低流行率聚类。与低流行率分层相比，高流行率分层中社会脆弱性指数较差的少女母亲比例更高。社会经济条件较差的地区少女母亲比例更高，这种情况在整个研究期间没有变化。巴西剥夺指数和负责家庭的女性比例每增加一个单位，PTM 分别增加 3.8（95%CI 3.1-4.4）和 0.086%（95%CI 0.03-0.14）。在研究期间的部分时间里，全球 PTM 有所减少，这种情况在高流行率分层中发生得较晚，但在研究的最后几年，比例再次稳定。
少女怀孕集中在社会经济条件较差和母亲脆弱性较高的地区，其随时间的变化在这些地区表现不同。
