Characteristics Related to the Prevalence of Minimal or Mild Endometriosis in Infertile Women

S Bérubé, Sylvie Bérubé, S Marcoux, Sylvie Marcoux, R Maheux, Rodolphe Maheux
Epidemiology (Cambridge, Mass.) · 1998 · vol. 9(5) , pp. 504–510 · doi:10.1097/00001648-199809000-00006 · PMID:9730028 · W1986178713
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This study identified that infertile women aged 25+ years, with earlier menarche, shorter menstrual cycles, and higher caffeine intake, had higher prevalence of minimal or mild endometriosis, while higher BMI and parity were associated with lower prevalence.

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Abstract

The objective of this case-control study is to identify factors associated with the prevalence of minimal or mild endometriosis among infertile women. Cases (N = 329) were women diagnosed by laparoscopy with minimal or mild endometriosis and without any other factors explaining their infertility. Controls (N = 262) were women in whom the infertility remained unexplained after a diagnostic laparoscopy. Selected characteristics were documented by means of a face-to-face interview before the laparoscopy. The prevalence of minimal or mild endometriosis was higher in women age 25 years or older, in those who reported menarche at the age of 13 years [prevalence odds ratio (POR) = 1.63; 95% confidence interval (CI) = 1.02-2.60] or older (POR = 1.73; 95% CI = 1.07-2.78), menstrual cycles of 27 days or less (POR = 1.63; 95% CI = 1.02-2.60), or caffeine intake of 300 mg per day or more (POR = 1.33; 95% CI = 0.91-1.94). The prevalence of minimal or mild endometriosis was inversely related to body mass index. Parous women were less likely to have endometriosis (POR = 0.61; 95% CI = 0.39-0.96) than were nulliparous women. Education, duration of infertility, and smoking status were not related to the presence of endometriosis.

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Condition tags

mesh:D004715endometriosisinfertility

MeSH descriptors

Endometriosis Infertility, Female Adult Age Factors Body Mass Index Case-Control Studies Confidence Intervals Endometriosis Endometriosis Female Humans Infertility, Female Infertility, Female Laparoscopy Menarche Odds Ratio Parity Prevalence Quebec Quebec

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