Global birth prevalence of major congenital anomalies: a systematic review and meta-analysis
Abstract
Background: There is a lack of systematic review on the global prevalence of major congenital anomalies. We performed a systematic review and meta-analysis of population-based studies on global birth prevalence of eight major congenital anomalies (esophageal atresia, congenital diaphragmatic hernia, duodenal atresia, intestinal atresia, gastroschisis, omphalocele, Hirschsprung's disease and anorectal malformation).
Methods: Population-based studies reporting the birth prevalence of these anomalies were included from 1969 to 2024. Data from eligible studies were pooled in meta-analysis to get global estimates of birth prevalence and prevalence in subgroups of geographic regions, countries with varying income levels and time periods.
Results: One hundred and twenty-three studies including a total of 256,507 cases of congenital anomalies and 769,455,220 births were included in this study. Overall birth prevalence of theses eight anomalies ranged from 0.86 to 3.11 cases per 10,000 births. Anorectal malformation had the highest birth prevalence among these anomalies with 3.11 cases (95% confidence intervals (CI): 2.77-3.50) per 10,000 births. Birth prevalence of congenital diaphragmatic hernia had a great decrease from 4.19 per 10,000 births in the 1960s to 1.30 per 10,000 births in the 2020s. Omphalocele had high prevalence in Africa and low-income countries.
Conclusion: This systematic review summarizes birth prevalence of eight major congenital anomalies. The burdens of these…
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Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid.
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