Table 1.
Demographic characteristics and semen parameters of 133 young men contributing 256 semen samples in the Russian Children’s Study.
| Characteristic | Median (IQR) or n (%) |
|---|---|
| Demographic characteristicsa | |
| Age (years ) | 18.3 (18.1–18.7) |
| Body mass index (kg/m2) | 21.0 (19.2–23.2) |
| Smoking statusb | 68 (51) |
| Alcohol consumptionc | 90 (68) |
| Semen parametersd | |
| Volume (mL) | 2.4 (1.8–3.5) |
| Sperm concentration (million/mL) | 51.3 (26.6–78.8) |
| Total sperm count (million) | 127 (61.0–222.0) |
| Sperm motility (A + B + C)e (%) | 64.0 (57.0–68.0) |
| Total motile sperm count (million) | 80.5 (35.8–141.0) |
| Abstinence time (days) | 2.9 (2.0–6.0) |
| IQR, interquartile range. aAssessed at the time of semen collection (or at visit closest in time). bQuestion was “In the past year, have you smoked a cigarette, even a few puffs?” In some cases, the questionnaire was filled out up to 3 years before the semen sample was collected. cQuestion was “Have you drunk alcohol in the last year, including beer?” In some cases, the questionnaire was filled out up to 3 years before the semen sample was collected. dTwo semen samples were collected from 123 (93%) young men. eThis measure includes rapidly progressive motile (class A), slowly progressive motile (class B), and locally motile (class C). | |