Figure 3. Mean Change in Frailty Score at Each Year Since Randomization According to Vitamin D₃ and Placebo Groups by Baseline Subgroups.

BMI indicates body mass index (calculated as weight in kilograms divided by height in meters squared; 25(OH)D, 25-hydroxyvitamin D.

^aSelf-reported Asian/Pacific Islander, Native American/Alaskan Native, non-Black Hispanic, and unknown race and ethnicity.