TABLE 2.
Semen parameters of male partners classified according to the World Health Organisation manual. Data are reported as median (95% confidence interval). The p‐value was calculated by Mann‐Whitney U‐test. [OAT = oligo‐astheno‐teratozoospermia; WHO = World Health Organisation]
| WHO previous editions | WHO V edition | ||
|---|---|---|---|
| (n = 13,112) | (n = 8901) | p‐value | |
| Semen volume (ml) | 1.5 (0.5–4.2) | 2.7 (0.9–6.0) | <0.001 |
| Sperm concentration (million/ml) | 28.0 (0.3–110.0) | 25.0 (0.2–102.4) | 0.004 |
| Total sperm number (million) | 46.5 (0.4–210.0) | 60.0 (0.4–336.5) | <0.001 |
| Progressive sperm motility (%) | 30.0 (0.5–63.8) | 29.0 (0.5–55.0) | <0.001 |
| Normal sperm morphology (%) | 6.0 (0.0–33.0) | 3.0 (0.0–10.0) | <0.001 |
| Semen alteration | |||
| Oligozoospermia n (%) | 5402 (41.2%) | 3359 (37.7%) | <0.001 |
| Asthenozoospermia n (%) | 8969 (68.4%) | 4709 (52.9%) | <0.001 |
| Teratozoospermia n (%) | 7917 (60.4%) | 4983 (56.0%) | <0.001 |
| OAT n (%) | 4641 (35.4%) | 2706 (30.4%) | <0.001 |