| Vitamin K supplementation arm (n = 193) | Placebo arm (n = 185) | |
| Mean age, years (SD) | 68.0 (5.5) | 68.3 (5.6) |
| % Female | 57.5 | 61.6 |
| BMI, kg/m2 (SD) | 28.5 (5.4) | 27.6 (4.6) |
| % Ever smoker | 54.9 | 56.8 |
| % Attained any college education | 55.4 | 49.7 |
| Baseline 25(OH) vitamin D, ng/ml (SD) | 23.0 (8.6) | 22.8 (8.9) |
| Baseline plasma phylloquinone, nM (SD) | 1.27 (1.76) | 1.10 (1.37) |
| Final plasma phylloquinone, nM (SD) | 3.13 (2.81) | 1.09 (1.02) |
BMI, body mass index.