Demographic, lifestyle, and reproductive determinants of serum anti-Müllerian hormone levels in adult women of reproductive age in Ilorin, North-Central Nigeria

Abstract Background Anti-Müllerian hormone is a dimeric glycoprotein produced by the granulosa cells of preantral and small antral follicles of the ovaries. It is a reliable biomarker of ovarian reserve, ageing, and response in the management of women with infertility. However, there are few studies on the determinants of serum anti-Müllerian hormone in Nigerian women. This study aimed to investigate determinants of serum anti-Müllerian hormone among adult women of reproductive age. The study was a hospital-based cross-sectional study involving 161 women of reproductive age attending the gynaecology clinic and immunisation clinic of a Nigerian tertiary hospital. Baseline characteristics were collected using a semi-structured questionnaire. Serum anti-Müllerian hormone was quantified using enzyme-linked immunosorbent assay. Results In univariate analysis, age (B = − 0.035, P = 0.000), parity (B = − 0.080, P = 0.001), and infertility duration (B = − 0.050, P = 0.011) had a negative relationship with serum anti-Müllerian hormone, while ethnicity (B = 0.180, P = 0.040), body mass index (B = 0.015, P = 0.010), and cycle length (B = 0.042, P = 0.000) had a positive relationship with serum anti-Müllerian hormone. In multivariable analysis, all relationships except infertility duration persisted. Conclusion We found that age, ethnicity, parity, infertility duration, body mass index, and cycle length were associated with serum anti-Müllerian hormone. A large prospective population-based study is required to better understand factors that are associated with serum anti-Müllerian hormone in an ethnically diverse country like Nigeria.