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Table 4 Comparison of mean serum 25(OH)D levels at baseline and first follow-up stratified by top 5 cancer sites (N = 799)

From: Impact of oral vitamin D supplementation on serum 25-hydroxyvitamin D levels in oncology

Site of tumor Baseline Mean 25(OH)D in ng/mL (SD) Follow-up Mean 25(OH)D in ng/mL (SD) Paired t-test p-value
All Cancers (n = 799) 19.1 (7.5) 36.2 (17.1) < 0.001
Breast (n = 182) 19.7 (8.0) 37.6 (16.8) < 0.001
Lung (n = 120) 18.4 (7.3) 41.1 (18.9) < 0.001
Pancreas (n = 60) 16.2 (7.7) 30.8 (14.2) < 0.001
Colorectal (n = 90) 18.7 (7.7) 31.9 (16.2) < 0.001
Prostate (n = 60) 20.2 (6.9) 42.1 (15.9) < 0.001
Others (n = 287) 19.5 (7.1) 34.6 (16.8) < 0.001
  1. SD = Standard Deviation