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Table 2 Correlation between Vitamin D level (by classification or quartile) and other factors

From: Low vitamin D level was associated with metabolic syndrome and high leptin level in subjects with nonalcoholic fatty liver disease: a community-based study

Variable

Classificationa

Quartileb

Age

0.332*

0.335*

Male

0.233*

0.274*

BMI

0.032

0.017

TNF-α

0.028

0.018

HS-CRP

−0.007

0.006

Adiponectin

0.053

0.032

Leptin

−0.124*

−0.175*

  1. aVitamin D classification: normal (> 30 ng/ml), insufficiency (20–30 ng/ml), deficiency (< 20 ng/ml)
  2. bVitamin D (quartile): quartile1 (< 22.41 ng/ml), quartile2 (22.41–28.41 ng/ml), quartile3 (28.41–35.38 ng/ml), quartile4 (> 35.38 ng/ml)
  3. *P < 0.05, by Spearman’s rank correlation coefficient