Plasma selenium, red blood cell (RBC) glutathione peroxidase and plasma α- and γ-tocopherol measurements at baseline and end of trial in those from whom blood samples were obtained, according to treatment arm
| Placebo | Selenium | |||
|---|---|---|---|---|
| N | Geometric mean | N | Geometric mean | |
| Plasma selenium (µg/l) at baseline | 73 | 84.05 | 72 | 81.54 |
| Plasma selenium (µg/l) at end | 57 | 81.99 | 46 | 121.02 |
| RBC glutathione peroxidase (units/mg Hb) at baseline | 73 | 28.88 | 72 | 28.12 |
| RBC glutathione peroxidase (units/mg Hb) at end | 56 | 28.53 | 46 | 29.15 |
| Plasma α-tocopherol (mmol/mol cholesterol) at baseline | 72 | 5.91 | 67 | 5.61 |
| Plasma α-tocopherol (mmol/mol cholesterol) at end | 55 | 5.52 | 46 | 5.62 |
| Plasma γ-tocopherol (mmol/mol cholesterol) at baseline | 72 | 0.29 | 67 | 0.30 |
| Plasma γ-tocopherol (mmol/mol cholesterol) at end | 55 | 0.27 | 46 | 0.26 |