Table 5 Change in mean percentage of residents at each facility receiving adequate (≥800 IU/day) vitamin D supplementation at 6, 12 and 18 months compared to baseline
| Â | Overall | Intervention Group (Wedge 1) | Control Group (Wedge 2) | Difference between groups (95% CI) p value | p value adjusted for baseline |
|---|---|---|---|---|---|
Baseline Mean % (SD) | 55.0 (16.0) | 57.1 (14.5) | 53.5 (17.2) | 3.6 (−6.8, 14.0) p = 0.4 |  |
6 Months Mean % (SD) | 55.4 (13.9) | 58.1 (13.4) | 53.4 (14.2) | 4.7 (−4.2, 13.6) p = 0.2 | p = 0.4 |
12 Months Mean % (SD) | 58.8 (14.2) | 58.8 (13.4) | 58.9 (13.8) | −0.1 (−9.3, 9.1) p = 0.9 | p = 0.3 |
18 Months Mean % (SD) | 59.6 (14.4) | 60.5 (15.2) | 58.9 (14.1) | 1.6 (−9.3, 9.1) p = 0.6 | p = 0.8 |
Change from baseline | |||||
6 Month Mean % Change (95% CI) p value | 0.40 (−2.2, 3.0) p = 0.7 | 1.05 p = 0.4 | −0.05 p = 0.9 | 1.10 (−3.8, 6.0) p = 0.6 |  |
12 Months Mean % Change (95% CI) p value | 3.86 (0.6, 7.2) p = 0.02 | 1.68 v = 0.3 | 5.41 p = 0.03 | −3.73 (−10.3, 2.9) p = 0.2 |  |
18 Month Mean % Change (95% CI) p value | 4.58 (0.9, 8.2) p = 0.015 | 3.42 p = 0.15 | 5.40 p = 0.053 | −1.98 (−9.0, 5.1) p = 0.5 |  |