| Table 1: Patient characteristics before and after letrozole treatment | |||||||||
| # | Diagnosis | Age |
No. of previous PESA |
FSH (IU/L) pre letrozole |
FSH (IU/L) post letrozole |
LH (IU/L) pre letrozole |
LH (IU/L) post letrozole |
Testosterone (ng/ml) pre letrozole |
Testosterone (ng/ml) post letrozole |
| 1 | deferens agenesis | 42 | 2 | 7.6 | 18.1 | 3.4 | 13.1 | 371 | 871.0 |
| 2 | deferens agenesis | 40 | 2 | 2.4 | 17.1 | 1.8 | 10.7 | 200 | 651.0 |
| 3 | deferens agenesis | 32 | 2 | 2.6 | 6.8 | 2.8 | 10.3 | 323 | 1084.0 |
| 4 | vasectomy | 55 | 3 | 3.0 | 13.8 | 2.4 | 11.7 | 435 | 681.0 |
| 5 | vasectomy | 65 | 2 | 4.7 | 5.9 | 4.2 | 6.5 | 374 | 855.0 |
| 6 | vasectomy | 43 | 2 | 4.5 | 12.7 | 6.3 | 35.7 | 951 | 942.0 |
| 7 | vasectomy | 46 | 4 | 2.3 | 2.7 | 1.5 | 2.5 | 312 | 349.6 |
| 8 | vasectomy | 53 | 3 | 5.4 | 11.2 | 4.3 | 5.5 | 305 | 916.0 |
| 9 | vasectomy | 50 | 2 | 3.6 | 15.1 | 3.7 | 9.1 | 456 | 547.0 |
| 10 | vasectomy | 55 | 3 | 5.3 | 12.1 | 3.7 | 8.7 | 487 | 678.0 |
| 11 | vasectomy | 54 | 4 | 4.8 | 5.6 | 2.5 | 4.0 | 431 | 288.3 |
| Mean±SD | 48.6±9.6 | 2.6±0.8 | 4.2±1.7 | 11.0±5.1 | 3.2±1.4 | 8.2±3.5 | 422.3±193.7 | 714.8±249.5 | |