Correlation between biochemical and clinical hyperandrogenism parameter in polycystic ovary syndrome in relation to age

Abstract Background To assess the correlation between clinical and biochemical hyperandrogenism parameters in polycystic ovary syndrome (PCOS) according to age. Methods This prospective study included 256 PCOS patients diagnosed according to the Rotterdam criteria in a university-based hospital. Androgen levels were measured using liquid chromatography-tandem mass spectrometry. Hirsutism, acne, and alopecia were assessed using the modified Ferriman-Gallwey (mF-G) score, Comprehensive Acne Severity Scale (CASS), and the Ludwig scale, respectively. The correlation between biochemical and clinical hyperandrogenism parameters was assessed in younger and older women with PCOS. Results The 256 PCOS patients were classified by age into two groups: age 18–29 years (n = 151) and age 30–40 years (n = 84). In women with PCOS, mF-G was significantly positively correlated with the free androgen index (FAI), dehydroepiandrosterone (DHEA), and DHEA sulfate (DHEA-S). CASS had a significant positive correlation with DHEA. mF-G was positively correlated with FAI in those aged 18–29 years, but the correlations were not significant in those aged 30–40 years. The positive correlation between specific body regions of clinical hyperandrogenism, especially mF-G of chin, lower abdomen, and thighs, and testosterone, as well as with FAI, was highest in those aged 18–29 years. In those aged 30–40 years clinical hyperandrogenism was mainly affected by DHEA, DHEA-S, and dihydrotestosterone. Conclusion The correlation between biochemical and clinical hyperandrogenism parameters varied with age in our East Asian population. Clinical hyperandrogenism was positively correlated with FAI in younger women with PCOS. The correlation between biochemical and clinical hyperandrogenism was not significant in older women with PCOS.