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Sex-stratified mortality trends in preterm birth complications in Sierra Leone: progress, persistence, and equity implications.

Alpha Umaru Bai-Sesay·Rosetta Doreen Jones·Alimamy Paul Simeon Baun·Daniel Karim Dauda Sesay
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Abstract

BACKGROUND: Preterm birth complications remain a leading cause of neonatal mortality in Sierra Leone, despite recent health system gains. Evidence on long-term sex-specific disparities in mortality due to preterm birth complications is limited, constraining equitable neonatal care planning. OBJECTIVE: To examine two‑decade trends in sex‑stratified mortality from preterm birth complications using standardized equity indicators. METHODS: We conducted a retrospective longitudinal analysis of sex-disaggregated mortality estimates from the World Health Organization (WHO) Global Health Estimates (GHE), accessed through the WHO Health Equity Assessment Toolkit (HEAT), Built-in Database Edition (Version 6.0). Mortality rates per 100,000 population were extracted for 2001, 2006, 2011, 2016, and 2021. Inequality was assessed using absolute difference (D), relative ratio (R), population attributable risk (PAR), and population attributable fraction (PAF). RESULTS: Mortality declined substantially between 2001 and 2021 for both males (85.1-49.3 per 100,000) and females (71.2-39.9 per 100,000). Male mortality remained consistently higher across all years, with relative ratios indicating approximately 20-25% excess mortality among male neonates. Absolute inequalities narrowed modestly over time, whereas relative inequalities remained largely unchanged. PAR and PAF remained close to zero throughout the study period. Wider uncertainty intervals in earlier years reflected limited empirical data availability. CONCLUSION: Although preterm mortality declined over two decades, a persistent male disadvantage remained in Sierra Leone. These findings highlight the importance of integrating sex-disaggregated equity monitoring into neonatal policies and programmes. Future research should evaluate strategies to reduce the persistent excess mortality among male neonates while sustaining overall improvements in neonatal survival and progress toward Sustainable Development Goal 3.2.

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HumansSierra LeoneFemalePremature BirthRetrospective StudiesInfant, NewbornInfant MortalityMaleLongitudinal StudiesSex FactorsHealth Status DisparitiesPregnancyInfantNeonatal mortalityWHO HEAT metricshealth equityinequality monitoringneonatal policypreterm birth complicationssex‑based disparitiesJournal Article

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Alpha Umaru Bai-Sesay, Rosetta Doreen Jones, Alimamy Paul Simeon Baun, Daniel Karim Dauda Sesay. 2026-08-06. Sex-stratified mortality trends in preterm birth complications in Sierra Leone: progress, persistence, and equity implications.. https://doi.org/10.1080/16549716.2026.2713866

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Journal Article resourceFemale subjectHealth Status Disparities subjectHumans subjectInfant subjectInfant Mortality subjectInfant, Newborn subjectJournal Article subjectLongitudinal Studies subjectMale subjectNeonatal mortality subjecthealth equity subjectinequality monitoring subjectneonatal policy subject

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