Table 1.
Demographics and Baseline Characteristics
| Active (n = 130) | Placebo (n = 130) | Overall (n = 260) | P a | |
|---|---|---|---|---|
| Demographics and behavioral | ||||
| Age, yb | 67.8 (65.1–71.5) | 69.0 (65.4–73.4) | 68.2 (65.4–72.5) | .251 |
| BMI, kg/m2b | 30.2 (26.4–34.6) | 30.0 (26.8–33.9) | 30.1 (26.6–34.1) | .867 |
| Calcium intake, mgb | 842.0 (600–1142) | 826.5 (628.0–1185) | 828.0 (614.0–1164) | .857 |
| Laboratory | ||||
| 25(OH)D3, ng/mL | 21.5 ± 6.5 | 22.2 ± 6.9 | 21.8 ± 6.7 | .352 |
| PTH, pg/mLb | 56.1 (41.0–73.6) | 56.4 (39.5–73.8) | 56.2 (39.8–73.8) | .977 |
| Serum Ca, mg/dLb | 9.5 (9.3–9.8) | 9.5 (9.3–9.8) | 9.5 (9.3–9.8) | .943 |
| Serum Cr, mg/dLb | 0.8 (0.7–0.9) | 0.7 (0.6–0.9) | 0.8 (0.6–0.9) | .472 |
| Free 25(OH)D, pg/mL | 4.7 ± 1.2 | 4.8 ± 1.3 | 4.7 ± 1.3 | .565 |
| 1, 25(OH)2D3, pg/mL | 52.4 ± 13.7 | 52.6 ± 15.4 | 52.5 ± 14.6 | .926 |
Normally distributed variables are presented as mean ± SD, and non–normally distributed variables are presented as median (IQR).
Abbreviations: BMI, body mass index; IQR, interquartile range.
aFor continuous data, P values are from a Wilcoxon rank-sum test for non–normally distributed variables and a 2 independent-samples t test for normally distributed variables. For categorical variables, P values are from the Fisher exact test.
bNon–normally distributed.