Volume, sperm count and motility in clinic volunteers and GP controls
| N (missing), N=534 | Quartiles | MWU | |||
| 25 | 50 | 75 | p Value | ||
| Volume | |||||
| GU clinic | 117 (0) | 1.8 | 2.4 | 3.4 | <0.001 |
| GP | 417 (0) | 2.2 | 3.2 | 4.4 | |
| Sperm count | |||||
| GU clinic | 117 (0) | 47 | 108 | 200 | 0.002 |
| GP | 416 (1) | 83 | 178 | 328 | |
| Motility | |||||
| GU clinic | 117 (0) | 61 | 72 | 81 | 0.55 |
| GP | 398 (19) | 63 | 74 | 80 | |
| Sperm concentration | |||||
| GU clinic | 117 (0) | 22 | 49 | 88 | 0.25 |
| GP | 417 (0) | 32 | 60 | 94 | |
| Percentage of abnormal forms | |||||
| GU clinic | 117 (0) | 86 | 88 | 89 | 0.04 |
| GP | 417 (0) | 86 | 87 | 89 | |
| Percentage of non-progressors | |||||
| GU clinic | 117 (0) | 12 | 19 | 26 | 0.56 |
| GP | 417 (0) | 13 | 19 | 25 | |
Volume in millilitres, total sperm count in millions, motility as percentage and sperm concentration as number per millilitre.
GP, general practice; GU, genitourinary; N, number of patients (varies in GP group because of non-suitability of some specimens); MWU, Mann–Whitney U test.