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Socioeconomic factors increase the risk of teenage pregnancy: spatial and temporal analysis in a Brazilian municipality
Open accessAbstract
ABSTRACT Objective: To evaluate the distribution of the proportion of teenage mothers (PTM) in time and space and its relationship with socioeconomic indicators and social vulnerability. Methods: 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. Results: 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. Conclusion: Teenage pregnancy is concentrated in regions with worse socioeconomic conditions and greater maternal vulnerability and its behavior over time occurred differently in these areas.
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“Structural inequalities—including limited access to comprehensive sexual education, contraceptive services [11], and economic opportunities—shape both the likelihood of adolescent pregnancy and the resources available for navigating early motherhood [12].”
From Motherhood in adolescence: a qualitative study of the lived experience of participants in a perinatal home-visiting intervention (2026) · cites this paper as [12]
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Metadata
- Authors
- Fernandes, C. M., Conceição, G. M. D. S., Silva, Z. P. D., Nampo, F. K., & Chiaravalloti Neto, F.
- Affiliations
- Universidade de São Paulo (BR)
- Universidade de São Paulo, Brazil
- Universidade Federal da Integração Latino-Americana (BR)
- Corresponding author
- Fernandes, Camila Meireles
- ORCID
- Venue
- Revista Brasileira de Epidemiologia
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2024
- Volume
- 27
- Pages
- e240040-e240040
- ISSN
- 1415-790X (ISSN-L)
- 1980-5497
- PMC
- PMC11290768
- OpenAlex
- W4401088370
- Cited by
- 16
- References
- 31
- Citations by year
- 2026: 11 · 2025: 5
- FWCI
- 7.59
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- Revista Brasileira de Epidemiologia (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Topics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Adolescent Sexual and Reproductive Health
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Health and Contraception
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Adolescent Health and Behaviors
- Keywords
- adolescent pregnancy, adolescent mothers, socioeconomic factors, social vulnerability, spatial clustering, temporal trends, Foz do Iguaçu
- MeSH terms
- Social Vulnerability, Adolescent, Brazil, Female, Humans, Pregnancy, Pregnancy in Adolescence, Residence Characteristics, Risk Factors, Socioeconomic Factors, Time Factors, Prevalence, Young Adult, Spatio-Temporal Analysis
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