Demographic, biological and dietary characteristics associated with endometriosis in a group of Sri Lankan women

Nalinda Silva, Hemantha Senanarake, Roshini Peiris‐John, Rajitha Wickremasinghe
In: Sri Lanka Journal of Obstetrics and Gynaecology · 2012 · vol. 33(3) , pp. 91 · doi:10.4038/sljog.v33i3.4016 · W2086479277
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

This case-control study found that longer menstruation duration and higher education levels were associated with endometriosis in Sri Lankan women, while no dietary factors showed a significant link.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 ⓘ

This case-control study at two tertiary care hospitals investigated demographic, biological, and dietary factors associated with endometriosis among 150 Sri Lankan women with surgically confirmed endometriosis and 150 age-matched laparoscopic/laparotomy-confirmed controls. Using interviewer-administered questionnaires and food frequency questionnaires, the authors found that menstrual duration was longer in cases than controls, while other measured variables such as ethnicity, age at menarche, menstrual cycle length, and body mass index were similar between groups; endometriosis was more common with regular menstrual cycles and with education above Advanced Level. Dietary intake showed no significant associations with endometriosis. The paper focuses on endometriosis, directly examining demographic and biological correlates in Sri Lankan women, and therefore is centrally about endometriosis—identifying factors such as menstrual duration and education level associated with endometriosis risk.

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Abstract

Objective: To identify demographic, biological and dietary factors associated with endometriosis in a group of Sri Lankan women. Methods: A case-control study was conducted at two tertiary care hospitals. Women with endometriosis (n=150) were compared with age-matched controls (n=150) with no evidence of endometriosis, both confirmed by laparoscopy or laparotomy. Data were collected using an interviewer-administered questionnaire and a food frequency questionnaire. Means were compared using paired t-tests and chi square tests and odds ratios (OR) were used to determine associations between dichotomous variables. Conditional logistic regression analysis was done to adjust for potential confounding variables. Results: The ethnic distribution, age at menarche, average length of the menstrual cycle and body mass index were similar in the two groups. The mean (+SD) duration of menstruation in the cases (4.11±0.11 days) was significantly higher than in the controls (3.47±0.16 days, p=0.01). Endometriosis was commoner among those with regular menstrual cycles (OR=3.108; 95% CI=1.473-9.627) and those having an education above Advanced Level (OR=1.729; 95% CI=1.041- 2.87). None of the food items was significantly associated with endometriosis. The risk of endometriosis was 2.084 times greater among those with an education above Advanced Level as compared to those having an education below Advanced Level (p=0.021) after adjusting for confounding factors. Conclusion: Among Sri Lankan women, endometriosis is commoner among those who are more educated. Key words: Endometriosis; demography; dysmenorrhea; education level; food frequency questionnaire DOI: http://dx.doi.org/10.4038/sljog.v33i3.4016 Sri Lanka Journal of Obstetrics and Gynaecology 2011; 33: 91-97

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endometriosisdysmenorrhea

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