ISSN: 2149-2247 | E-ISSN: 2149-2549
The Association Between Parity and the Risk of Endometriosis: A Meta-Analysis [Erciyes Med J]
Erciyes Med J. 2021; 43(3): 228-232 | DOI: 10.14744/etd.2020.25874

The Association Between Parity and the Risk of Endometriosis: A Meta-Analysis

Ensiyeh Jenabi1, Bita Fereidooni2, Salman Khazaei3
1Autism Spectrum Disorders Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
2Midwife in Social Security Organization, Hamadan, Iran
3Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran

Objective: Studies regarding the effect of parity on endometriosis are in controversy. This study is the first, to our knowledge, to evaluate the association between parity and risk of endometriosis. The purpose of performing this meta-analysis was evaluating the association between parity and risk of endometriosis.
Materials and Methods: We conducted an advanced search in PubMed, Scopus, and Web of Science to explore data from the beginning of 2000. We performed Egger’s and Begg’s tests to evaluate publication bias. The Q-statistic test and I-squared (I2) test were used to estimate the heterogeneity among studies. The association between parity and risk of endometriosis was determined by the random effects model.
Results: In total, we included 17 studies in the present meta-analysis with 78,644 subjects. The pooled overall OR was 0.53 (95% CI: 0.40, 0.67). The significant heterogeneity was observed among these studies (I2=95.7%, p<0.001).
Conclusion: The present study is the first meta-analysis that showed that parity is a protective factor for endometriosis. In addition, the risk of endometriosis decreased with higher parity based on subgroup analysis.

Keywords: Endometriosis, meta-analysis, parity, pregnancy.

Ensiyeh Jenabi, Bita Fereidooni, Salman Khazaei. The Association Between Parity and the Risk of Endometriosis: A Meta-Analysis. Erciyes Med J. 2021; 43(3): 228-232

Corresponding Author: Salman Khazaei, Iran
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