Table 1.
Characteristics of the men in the study groups.
| Greenland | Warsaw | Sweden | Kharkiv | All | |
|---|---|---|---|---|---|
| Age (years) | |||||
| No. | 35 | 81 | 58 | 79 | 253 |
| Median (SD) | 30 (6.0) | 30 (4.1) | 44 (9.8) | 25 (5.4) | 30 (9.6) |
| Min–max | 18–46 | 24–46 | 24–68 | 16–45 | 16–68 |
| BMI (kg/m2) | |||||
| No. | 36 | 80 | 59 | 80 | 255 |
| Median (SD) | 26 (3.7) | 25 (3.4) | 26 (2.8) | 23 (3.1) | 25 (3.3) |
| Min–max | 19–35 | 19–38 | 22–36 | 19–36 | 19–38 |
| Alcohol (drinks/week) | |||||
| No. | 23 | 71 | 61 | 155 | |
| Median (SD) | 2.8 (4.6) | 4.0 (6.5) | NA | 3.0 (2.9) | 3.0 (5.2) |
| Min–max | 0–31 | 0–30 | 0.5–15 | 0–31 | |
| Smoking | |||||
| Percent (No.) | 86 (35) | 49 (81) | 64 (59) | 82 (81) | 68 (256) |
| Seafood (days/week) | |||||
| No. | 36 | 76 | 80 | 192 | |
| Median (SD) | 1.5 (1.5) | 1.0 (1.2) | NA | 4.0 (1.2) | 2.0 (1.6) |
| Min–max | 0–7 | 0–9 | 1–9 | 0–9 | |
| Coffee (cups/day) | |||||
| No. | 34 | 70 | 35 | 139 | |
| Median (SD) | 3.0 (4.0) | 1.3 (1.2) | NA | 2.0 (1.2) | 2.0 (2.5) |
| Min–max | 0–12 | 0–6 | 1–7 | 0–12 | |
| Total T (nmol/Ll) | |||||
| No. | 11 | 69 | 58 | 82 | 220 |
| Median (SD) | 15 (4.1) | 13 (4.3) | 11 (5.0) | 18 (4.5) | 15 (5.3) |
| Min–max | 10–23 | 6–23 | 4–28 | 8–31 | 4–31 |
| Free T (nmol/L) | |||||
| No. | 11 | 69 | 58 | 82 | 220 |
| Median (SD) | 0.32 (0.07) | 0.30 (0.08) | 0.24 (0.08) | 0.39 (0.10) | 0.30 (0.11) |
| Min-max | 0.11–0.49 | 0.15–0.51 | 0.09–0.50 | 0.20–0.64 | 0.09–0.64 |
| Estradiol (nmol/L) | |||||
| No. | 11 | 69 | 58 | 82 | 220 |
| Median (SD) | 59 (16) | 70 (32) | 64 (21) | 79 (24) | 71 (27) |
| Min–max | 31–85 | 45–297 | 25–154 | 33–144 | 25–297 |
Abbreviations: max, maximum; Min, minimum; NA, not available; T, testosterone. No. is the number of individuals with data for the specific demographic and lifestyle characteristics.