Table 1.
Baseline characteristics presented as number (percentage) or median (5–95 percentiles).
| Variable | Intervention (n = 49) | Control (n = 45) |
|---|---|---|
| Women | 21 (43%) | 19 (42%) |
| Men | 28 (57%) | 26 (58%) |
| Age, year | 61 (51–72) | 59 (51–73) |
| BMI, kg/m2 | 26.3 (21.0–31.1) | 25.2 (20.3–32.5) |
| Whole blood selenium, ng/mL | 113.5 (91.3–147.4) | 114.6 (96.6–136.0) 1 |
| Plasma selenoprotein P, ng selenium/mL | 51.4 (35.0–64.0) 2 | 51.4 (35.4–65.7) 3 |
| Plasma selenium, ng/mL | 84.7 (67.8–106.5) 2 | 86.4 (70.5–103.3) 3 |
1 n = 44 due to exclusion of outlying values (n = 1), all whole blood selenium concentrations for this person were excluded; 2 n = 46 due to errors in the laboratory measures (n = 3), all plasma selenoprotein P concentrations and the plasma selenium concentration analyzed only at baseline were excluded for these persons; 3 n = 43 due to errors in the laboratory measures (n = 2); all plasma selenoprotein P concentrations and the plasma selenium concentration analyzed only at baseline were excluded for these persons.