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http://dx.doi.org/10.3345/cep.2020.01956

Association between small for gestational age and risk of autism spectrum disorders: a meta-analysis  

Jenabi, Ensiyeh (Autism Spectrum Disorders Research Center, Hamadan University of Medical Sciences)
Bashirian, Saeid (Social Determinants of Health Research Center, Hamadan University of Medical Sciences)
Asali, Zahra (Department of Midwifery, Tuyserkan Branch, Islamic Azad University)
Seyedi, Mahdieh (Autism Spectrum Disorders Research Center, Hamadan University of Medical Sciences)
Publication Information
Clinical and Experimental Pediatrics / v.64, no.10, 2021 , pp. 538-542 More about this Journal
Abstract
Background: The relationship between small for gestational age (SGA) and autism spectrum disorders (ASDs) remains unknown. Purpose: This meta-analysis aimed to investigate the relationship between SGA and the risk of ASD. Methods: We searched PubMed, Web of Science, and Scopus databases from inception to November 2020. The heterogeneity across studies was explored using the I2 statistic. The possibility of publication bias was assessed using Begg test. The results were reported using the odds ratio (OR) and 95% confidence interval (CI) using a random-effects model. Results: The literature search yielded 824 articles with 8,752,138 participants. We assessed the association between SGA and the risk of ASD in cohort and case-control studies. Based on the random-effects model, compared with SGA, the estimated OR of the risk of ASD was 1.17 (95% CI, 1.09-1.24). Therefore, there was a significant association between SGA and the risk of ASD. Conclusion: Based on OR reports in epidemiological studies, we showed that SGA is a risk factor for and can increase the risk of ASD. The association between SGA and ASD risk has further relevance to the current public health emphasis on appropriate prepregnancy weight and pregnancy weight gain.
Keywords
Autism spectrum disorder; Meta-analysis; Small for gestational age;
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