Table 2.
Distribution of semen parameters for the participants (n = 1554)
| Semen parametera | Mean (SD) | Percentile | ||||
|---|---|---|---|---|---|---|
| 10th | 25th | 50th | 75th | 90th | ||
| Semen volume (ml) | 2.7 (1.3) | 1.0 | 2.0 | 2.0 | 3.0 | 5.0 |
| Sperm concentration (106/ml) | 62.0 (32.0) | 23.3 | 37.1 | 58.3 | 84.4 | 108.0 |
| Total sperm number (106) | 172.2 (129.9) | 39.6 | 79.2 | 142.6 | 231.3 | 341.7 |
| Total motility (%) | 55.2 (19.3) | 28.5 | 42.0 | 56.2 | 69.3 | 80.0 |
| Progressive motility (%) | 43.8 (16.9) | 21.9 | 31.8 | 44.1 | 55.9 | 65.4 |
| VCL (μm/s) | 47.7 (8.9) | 37.3 | 42.1 | 47.2 | 53.3 | 59.2 |
| VSL (μm/s) | 29.8 (6.1) | 23.0 | 25.8 | 29.6 | 33.6 | 37.6 |
| VAP (μm/s) | 33.5 (6.2) | 26.4 | 29.4 | 33.4 | 37.5 | 41.3 |
| BCF (Hz) | 5.1 (0.7) | 4.3 | 4.6 | 5.1 | 5.5 | 6.0 |
| ALH (μm/s) | 3.6 (1.1) | 2.4 | 2.9 | 3.6 | 4.3 | 4.9 |
| LIN (%) | 61.3 (7.5) | 52.1 | 56.2 | 61.2 | 66.4 | 70.8 |
| STR (%) | 85.2 (4.1) | 80.2 | 83.0 | 85.6 | 88.0 | 89.8 |
| WOB (%) | 70.3 (6.4) | 62.6 | 65.7 | 70.2 | 74.6 | 78.3 |
| MAD (°) | 56.6 (7.9) | 46.8 | 52.0 | 57.2 | 62.1 | 65.9 |
aALH amplitude of lateral head displacement, BCF beat cross frequency, LIN linearity, MAD mean angular displacement, SD standard deviation, STR straightness, VAP average path velocity, VCL curvilinear velocity, VSL straight line velocity, WOB curvilinear path wobble