Table 1 Clinical characteristics of patients (PCOS and non-PCOS groups)
Items | Before PSM | P value | After PSM(1:4) | P value | ||
|---|---|---|---|---|---|---|
PCOS group | Non-PCOS group | PCOS group | Non-PCOS group | |||
Number | 205 | 4021 | - | 189 | 697 | - |
Age, years | 30.80 ± 3.76 | 33.44 ± 8.98 | < 0.001 | 31.05 ± 3.77 | 31.21 ± 4.26 | 0.621 |
BMI (kg/m2) | 23.29 ± 3.56 | 22.04 ± 2.92 | < 0.001 | 22.88 ± 3.24 | 22.57 ± 2.89 | 0.229 |
Infertility duration, years | 3.89 ± 2.87 | 3.87 ± 3.26 | 0.916 | 3.82 ± 2.85 | 3.84 ± 3.01 | 0.927 |
Infertility | < 0.001 | 0.482 | ||||
Primary infertility % | 125/205(60.98%) | 1741/4021(43.30%) | 109/189(57.67%) | 382/697(54.81%) | ||
Secondary infertility % | 80/205(39.02%) | 2280/4021(56.70%) | 80/189(42.33%) | 315/697(45.19%) | ||