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Table 2 Descriptive characteristics (Mean ± SD) for the selected 870 subjects at baseline

From: The effect of calcium and vitamin D supplementation on obesity in postmenopausal women: secondary analysis for a large-scale, placebo controlled, double-blind, 4-year longitudinal clinical trial

Variables

Total

n= 870

Placebo

n= 206

Ca-only

n= 328

Ca + D

n= 336

P

Age (y)

66.0 ± 6.9

65.2 ± 6.5

66.0 ± 6.6

66.5 ± 7.5

0.13

Body mass index (kg/m2)

28.8 ± 5.3

28.8 ± 5.3

28.9 ± 5.4

28.7 ± 5.2

0.96

Trunk fat (kg)

14.3 ± 4.7

14.3 ± 4.8

14.5 ± 4.8

14.1 ± 4.6

0.53

Trunk lean (kg)

21.9 ± 3.1

22.1 ± 2.9

22.0 ± 3.2

21.8 ± 3.1

0.37

Percentage of trunk fat (%)

38.6 ± 6.5

38.3 ± 6.6

38.9 ± 6.8

38.5 ± 6.1

0.55

25(OH)D (nmol/L)

73.2 ± 19.9

73.6 ± 20.7

73.0 ± 20.4

73.1 ± 18.8

0.93

Dietary calcium intake (mg/d)

670 ± 389

671 ± 406

681 ± 376

658 ± 392

0.74

Habitual calcium supplement (mg/d)

347 ± 342

334 ± 318

342 ± 354

359 ± 345

0.68

Total calcium intake (mg/d)

1016 ± 520

1004 ± 518

1023 ± 508

1016 ± 535

0.92

Habitual vitamin D supplement (IU/d)

198 ± 189

189 ± 194

206 ± 186

196 ± 188

0.57

  1. Note: P values were calculated by analysis of variance (ANOVA) to compare the means of variables among the placebo, Ca-only, and Ca + D groups.