Prostatic-specific antigen (PSA) levels in patients with polycystic ovary syndrome (PCOS): a meta-analysis

Table 2 Results of subgroup analysis among PCOS vs controls

Subgroup	Studies Included (N)	Sample size (PCOS/CG)	Chi square (df)	P value	Pooled Overall SMD (95% CI)	Heterogeneity (I²)
Total PSA	8	285/247	26.98 (7)	.001	0.84 (0.49–1.19)	74
Free PSA	5	168/125	5.38 (4)	.001	0.76 (0.53–0.99)	26
BMI ≥ 25	6	190/110	4.50 (5)	.001	0.76 (0.54–0.97)	0
BMI < 25	7	263/262	27.83 (6)	.001	0.87 (0.48–1.26)	78
Age ≥ 25	5	158/182	3.43 (4)	.001	0.84 (0.62–1.07)	0
Age < 25	8	295/260	28.45 (7)	.001	0.78 (0.42–1.14)	75
Free testosterone	9	292/217	28.78 (8)	.001	0.80 (0.47–1.13)	72
LH/FSH	6	199/145	0.68 (5)	.001	0.95 (0.74–1.15)	0
FAI	4	146/140	10.65 (3)	.001	1.02 (0.55–1.50)	72

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