RARRES2 and polycystic ovary syndrome: In a subgroup analysis based on the BMI, serum chemerin levels were higher in women with PCOS and BMI >30 kg/m2 than women with PCOS and BMI <30 kg/m2 (WMD: 20.16 pg/ml, 95% CI: 17.15, 23.17, p < .001).