Menstrual dysfunction in women of reproductive age belonging to major ethnic groups in Eastern Siberia: a cross-sectional study

Aim . To determine the prevalence and features of menstrual dysfunction in premenopausal women various ethnicities inhabitating Eastern Siberia. Materials Methods We conducted a cross-sectional study which included reproductive age (18-44 years) living Irkutsk region Republic Buryatia. Out 1134 women, 715 (63.1%) were Caucasians, 312 (27.5%) Asians (Mongoloid), 107 (9.4%) mixed ethnicity. The data have been collected during annual physical examination carried out between March 2016 to May 2021, Results average menarche onset was 13.3 ± 1.4 years did not differ significantly Asians, group ethnicities. most frequent ages for 11 15 among ethnicity respectively. Chronic abnormal uterine bleeding dysmenorrhea detected 573/1134 (50.5%) 280/1134 (24.7%) examined respectively, without significant differences However, symptoms more severe Caucasians as compared Asian women. Conclusion variant is chronic bleeding. There no irregular cycles, oligo/anovulation, bleeding, belonging different ethnicities, although clinical manifestations pronounced Caucasians.