Table 3 Two multiple linear regression models of the determinants of serum 25(OH)D levels in CRC patients.

From: Decreased preoperative serum 25-Hydroxyvitamin D levels in colorectal cancer are associated with systemic inflammation and serrated morphology

Independent

Beta

p value

Model 1 (n = 115; R = 0.394, R2 = 0.155)

 Age

0.157

0.082

 Measurement in summer or autumn (no vs. yes)

0.311

6.8E-4

 Body mass index

−0.106

0.234

 Serrated morphology (no vs. yes)

−0.175

0.049

Model 2 (n = 115; R = 0.450, R2 = 0.202)

 Age

0.142

0.106

 Measurement in summer or autumn (no vs. yes)

0.266

0.0028

 Serrated morphology (no vs. yes)

−0.178

0.039

 Blood neutrophil count

−0.246

0.0051

  1. Model 1 included patient age as a basic clinical variable and three other clinicopathological variables with the highest statistical significance in the univariate analyses (BMI, season of measurement, and serrated histology). Model 2 was constructed to test, whether also systemic inflammatory markers had independent predictive value on serum 25(OH)D levels. Serum 25(OH)D, blood neutrophil count, and body mass index were logarithmically transformed because of positive skewness.
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