Table I.
Descriptive characteristics of the study population of infertile men.
| Positive semen culture | Negative semen culture | Overall | |
|---|---|---|---|
| n = 54 | n = 469 | n = 523 | |
| Age (years) | |||
| Median (IQR) | 38 (33–42) | 36 (34–40) | 37 (34–40) |
| BMI (kg/m2) | |||
| Median (IQR) | 25 (24–28) | 25 (23–27) | 25 (23–27) |
| BMI (kg/m2) | |||
| <25 | 27 (50) | 234 (50) | 261 (50) |
| 25–29.9 | 18 (33) | 195 (42) | 213 (41) |
| >30 | 9 (17) | 40 (9) | 49 (9) |
| CCI, n (%) | |||
| 0 | 52 (96) | 441 (94) | 493 (94) |
| 1 | 0 (0) | 18 (4) | 18 (3) |
| 2+ | 2 (4) | 10 (2) | 12 (2) |
| Mean testicular volume (Prader) | |||
| Median (IQR) | 15 (12–25) | 18 (14–20) | 18 (14–23) |
| Infertility type, n (%) | |||
| Primary | 48 (89) | 410 (87) | 458 (88) |
| Secondary | 6 (11) | 59 (13) | 65 (12) |
| Infertility factor, n (%) | |||
| MFI | 36 (67) | 318 (68) | 354 (68) |
| Mixed | 18 (33) | 151 (32) | 169 (32) |
| Total testosterone (ng/ml) | |||
| Median (IQR) | 4.2 (3.0–5.6) | 4.7 (3.6–5.9) | 4.7 (3.5–5.9) |
| FSH (mU/ml) | |||
| Median (IQR) | 5.5 (3.1–9.3) | 4.3 (2.9–7.8) | 4.4 (2.9–8.0) |
| NLR | |||
| Median (IQR) | 1.84 (1.51–2.35) | 1.58 (1.27–2.06) | 1.59 (1.28–2.08) |
| Sperm concentration (106/ml) | |||
| Median (IQR) | 19 (4–45) | 20 (4–48) | 19 (4–48) |
| Azoospermia, n (%) | |||
| No | 48 (89) | 432 (92) | 480 (92) |
| Yes | 6 (11) | 37 (8) | 43 (8) |
| Semen leukocytes (106/ml) | |||
| Median (IQR) | 299 (69–900) | 400 (120–1000) | 400 (112–997) |
| Leukocytospermia, n (%) | |||
| No | 43 (80) | 349 (74) | 392 (75) |
| Yes | 11 (20) | 120 (26) | 131 (25) |
CCI, Charlson Comorbidity Index; IQR, interquartile range; MFI, male factor infertility; mixed, infertility with a mixed male-female factor; NLR, neutrophil-to-lymphocyte ratio.