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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

From: Increasing the uptake of vitamin D supplement use in Australian residential aged care facilities: results from the vitamin D implementation (ViDAus) study

  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
 
  1. CI Confidence Interval