Table 1.
Patient characteristics of men with nonobstructive azoospermia who underwent microdissection testicular sperm extraction
| Characteristics | Nonidiopathic | Idiopathic | No testing | P* |
|---|---|---|---|---|
| Total, n (%) | 75 (33.5) | 86 (38.4) | 63 (28.1) | |
| Malignancy | 30 (40.0) | 0 (0) | 0 (0) | <0.001 |
| Cryptorchidism | 15 (20.0) | 0 (0) | 0 (0) | <0.001 |
| Genetic abnormality | 28 (37.3) | 0 (0) | – | <0.001 |
| Multiple | 2 (2.7) | 0 (0) | 0 (0) | 0.135 |
| Age (year), median (IQR) | 32 (29–35) | 34 (31–39) | 35 (32–38) | 0.001 |
| Serum T (ng dl−1), median (IQR) | 343 (240–421) | 365 (307–477) | 378 (320–464) | 0.016 |
| Serum FSH (mIU ml−1), median (IQR) | 24.1 (15.1–31.2) | 20.2 (10.3–26.8) | 16.2 (6.2–24.9) | 0.003 |
| Varicocele, n (%) | 4 (5.3) | 13 (15.1) | 15 (23.8) | 0.008 |
*Chi-squared test comparing all three groups, where applicable. IQR: interquartile range; T: testosterone; FSH: follicle stimulating hormone; –: not applicable