Active and control regimens
| Type of participant | 1-Year regimen | Equivalent daily dose of vitamin D3 |
|---|---|---|
| Active arm | ||
| Carer | 6×3 mg (120 000 IU) vitamin D3 once every 2 months | 50 µg (2000 IU) |
| Resident | 6×2.4 mg (96 000 IU) vitamin D3 once every 2 months +10 µg (400 IU) vitamin D3 daily | 50 µg (2000 IU) |
| Control arm | ||
| Carer | 6× placebo once every 2 months | Nil |
| Resident | 6× placebo once every 2 months +10 µg (400 IU) vitamin D3 daily | 10 µg (400 IU) |