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Abstract

Objective

Studies on prenatal antibiotic use and Autism Spectrum Disorder (ASD) risk have yielded inconsistent results.

Aim

This study aimed to resolve these discrepancies by conducting a meta-analysis on the relationship between prenatal antibiotic use and ASD in children.

Method

A comprehensive search was conducted in three main databases: PubMed, Scopus, and Web of Science, up to August 1, 2024. The analysis employed random-effect models to estimate effect sizes, including hazard ratios (HR) and odds ratios (OR). Publication bias was assessed using Begg's test and Egger's regression test. Subgroup analyses explored variations in the association based on the trimester of pregnancy. The quality of the included studies was assessed using the Newcastle-Ottawa Scale (NOS).

Results

In this meta-analysis, which included twelve studies with a total population of 5,065,060, prenatal antibiotic use was associated with an increased risk of Autism Spectrum Disorder (ASD). The estimated HR for this risk was 1.08 (95% CI: 1.05, 1.12), and the OR was 1.16 (95% CI: 1.09, 1.23), with no detected heterogeneity among studies. The analysis found no publication bias. Significant associations were observed for each trimester: first trimester (HR: 1.11; 95% CI: 1.04, 1.18), second trimester (HR: 1.10; 95% CI: 1.06, 1.14), and third trimester (HR: 1.09; 95% CI: 1.01, 1.18).

Conclusion

The analysis showed that prenatal antibiotic use is a risk factor for ASD. Prenatal antibiotic use was associated with an increase in the risk of ASD across all trimesters of pregnancy. Future research should focus on elucidating the mechanisms underlying this association by examining the effects of specific antibiotic classes, dosages, and timing during critical developmental periods. Longitudinal studies with comprehensive control for confounding factors are essential for strengthening causal inferences and guiding clinical recommendations regarding antibiotic use during pregnancy.

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2025-05-14
2025-09-13

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The Association between Prenatal Antibiotic Use and the Risk of Autism Spectrum Disorders among Children: An Updated Meta-Analysis
Bentham Science Publishers ; https://doi.org/10.2174/0115733963352806250512100056
/content/journals/cpr/10.2174/0115733963352806250512100056
/content/journals/cpr/10.2174/0115733963352806250512100056
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  • Article Type:     Research Article
Keywords: prenatal ; meta-Analysis ; pregnancy ; antibiotic ; Autism spectrum disorder ; children

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