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Table 2 Correlation coefficients for adiponectin, C-reactive protein, interleukin-6, and fetuin-A concentrations and markers of glucose metabolism at baseline

From: Effects of caffeinated and decaffeinated coffee on biological risk factors for type 2 diabetes: a randomized controlled trial

  Adiponectin (μg/mL) C-reactive Protein (mg/L)a Interleukin-6 (pg/mL)a Fetuin-A (μg/mL)a
Glucose (mmol/L)b     
   Fastinga -0.29 0.15 0.004 0.11
   2-hour -0.25 0.16 0.20 0.26
   Area under the curve -0.22 0.13 0.05 0.02
Insulin (pmol/L)     
   Fastinga -0.06 0.23 0.17 0.33c
   2-houra -0.21 0.30 0.43c 0.30
   Area under the curve -0.17 0.22 0.43c 0.31c
CISI (mmol/L-1 * pmol/L-1)a 0.13 -0.26 -0.27 -0.33c
Insulin30 min/Glucose30 min b -0.11 0.06 0.40c 0.24
HOMA-IRb -0.04 0.22 0.15 0.34c
  1. Spearman correlation coefficients have been adjusted for age, sex, and baseline BMI.
  2. CISI, composite insulin sensitivity index; HOMA, homeostasis model assessment.
  3. a Values were log transformed due to significant departures from normality.
  4. b One participant missing baseline fasting glucose measurement (Decaffeinated coffee treatment group).
  5. c P-value < 0.05.