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Fig. 2 | BMC Geriatrics

Fig. 2

From: The effects of vitamin D supplementation on frailty in older adults at risk for falls

Fig. 2

Hazard ratios (HRs) of developing frailty, improving frailty status, and worsening frailty status by vitamin D treatment groups in the confirmatory stage and dose-finding stage. The two sets of analyses comparing PHD vs. 200 IU/d and pure 1000 IU/d vs. 200 IU/d were conducted from the confirmatory stage. The four vitamin D treatment groups were compared among participants in the burn-in cohort from the dose-finding stage. This is an unbiased population for comparison of each higher dose versus control because these participants were randomized prior to the first adaptation of the randomization probabilities. PHD = pooled higher doses (combined 1000 IU/d, 2000 IU/d, and 4000 IU/d). IU/d = international units per day

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