2. Serum vitamin K levels (Drury 2008).
| Dose | n | Serum vitamin K levels (nmol/L) Baseline mean (SD) | Serum vitamin K levels (nmol/L) End of study mean (SD) |
| 1 mg/day | 7 | 0.28 (0.25) | 2.52 (2.61) |
| 5 mg/day | 6 | 0.15 (0.19) | 6.98 (9.95) |
SD: standard deviation
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