Table 1.
The characteristics of the patients who underwent semen analyses (n = 54).
| Parameter | Mean | S.D. | Median | Interquartile range |
|---|---|---|---|---|
| Age (years old) | 34.9 | 5.1 | 35 | 31–39 |
| Age of female partner (years old) | 33.2 | 4.6 | 32 | 30–37 |
| Duration of infertility (months) | 36.0 | 28.3 | 30 | 17.3–43.3 |
| Serum LH (mIU/mL) | 4.80 | 2.34 | 4.20 | 3.28–5.85 |
| Serum FSH (mIU/mL) | 6.73 | 3.54 | 5.6 | 4.40–8.63 |
| Serum total testosterone (ng/mL) | 4.80 | 1.59 | 4.84 | 3.44–5.93 |
| Serum free testosterone (pg/mL) | 9.56 | 2.85 | 9.25 | 7.6–11.3 |
| Brinkman index# | 138 | 236 | 0 | 0–235 |
| Body mass index (kg/cm2) | 23.5 | 2.7 | 23.3 | 21.3–26.9 |
|
| ||||
| Causes of male infertility | ||||
| Idiopathic | n = 21 | |||
| Varicocele | n = 33 | |||
| Chronic alcohol use | ||||
| (+) | n = 27 | |||
| (−) | n = 27 | |||
| Current smoking | ||||
| (+) | n = 10 | |||
| (−) | n = 43 | |||
| Unknown | n = 1 | |||
S.D.: standard deviation; LH: luteinizing hormone; FSH: follicle-stimulating hormone; #daily number of cigarettes × years.