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Table 1 Comparison of patient’s characteristics by treatment group: vitamin D treatment versus placebo

From: Effects of vitamin D supplementation on alveolar macrophage gene expression: preliminary results of a randomized, controlled trial

Variable Placebo group Treatment group P
Age (years) 26.3 25.6 0.72
Baseline 25(OH)D* level (ng/ml) 32.9 30.9 0.56
Baseline 1,25(OH)D level (pg/ml) 49.3 51.2 0.67
Baseline parathyroid hormone (pg/ml) 34.9 36.8 0.57
Baseline calcium level (mg/dl) 9.2 9.1 0.47
Male gender (%) 36.7% 63.3% 0.20
  1. *25-hydroxyvitamin D.
  2. 1,25-hydroxyvitamin D.