Differences in metabolic syndrome indicators by body mass index of women with endometriosis

Aim The study aimed to identify the relationships between metabolic syndrome indicators and BMI in women with endometriosis. Design A retrospective observational study design was utilized to analyse secondary data from a longitudinal dataset. Methods A total of 281,810 women diagnosed with endometriosis and aged 15 through 49 were drawn from the National Health Insurance Service-National Health Screening Cohort data of the Republic of Korea from the year 2009 to 2016. Body mass index (BMI) and five indicators of metabolic syndrome were extracted. Descriptive statistics, Cochran-Mantel-Haenszel test, chi-square test and Cochran-Armitage test were used. Results Yearly changes in abnormal waist circumference, elevated fasting blood sugar and abnormally low levels of high-density lipoprotein cholesterol were statistically significant. The risk groups of these indicators all showed statistically significant differences according to BMI. The proportions of women with abnormal findings for all indicators significantly increased as BMI increased.