ArticleFrontiers in reproductive health2025
Assessing factors influencing adolescent sexual debut in Nigeria: a multi-cluster survival analysis approach.
Article in Frontiers in reproductive health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Time to first sexual experience and its predictors among young women (15-24 years) in Zambia: Evidence from 2024 Demographic and Health Survey.PLOS global public health · 2026Article
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3 authors.
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Abstract
Introduction: Early sexual debut is an area of concern in Nigeria with implications for reproductive health. Methods: This study addresses this by proposing a more effective survival model-one that incorporates both independent and identically distributed (IID) and Besag intrinsically conditional auto-regressive (ICAR) random effect priors, using a generalised additive model that accounts for both individual and spatial influences on age at first sex. We analyse data from the 2018 Nigerian NDHS survey and compare our model with existing models: a model without the cluster frailty effect, a model that ignores the Besag ICAR and includes the IID, and a model that ignores the IID and includes only the Besag ICAR. Results: Our approach, which combines independent and spatial random effects, outperforms others based on statistical criteria (Deviation Information Criterion and the Widely Applicable Information Criterion). Discussion: As shown in this study, the proposed model effectively captures the complexity of age at first sex. In addition, visualisations reveal significant geographic and social clusters with high rates of early sexual debut in Nigeria. These findings highlight the importance of considering multi-level clustering to better understand and promote healthy sexual behaviour among young Nigerians through targeted interventions.
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