Figure 2. Circulating miR-181d-5p levels correlate with clinical outcomes of COS. Serum levels of miR-181d-5p were correlated with clinical attributes of the cohort. Spearman’s rank correlation coefficient was calculated. BMI, body mass index; Follicles, follicles aspirated; FSH, follicle-stimulating hormone; PR, poor response; NR, normal response; HR, high response.