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Table 3 Correlations between 1 and 2hPG and glucose and cardiometabolic parameter

From: Oral glucose tolerance testing at 1 h and 2 h: relationship with glucose and cardiometabolic parameters and agreement for pre-diabetes diagnosis in patients with morbid obesity

Parameter Fasting glucose 1hPG 2hPG
  Correlation coefficient* p-value Correlation coefficient* p-value Correlation coefficient* p-value
Fasting glucose (mg/dL) 0.581  < 0.001 0.359  < 0.001
HOMA-β −0.310  < 0.001 −0.092 0.018 0.029 0.462
HOMA-IR 0.312  < 0.001 0.281  < 0.001 0.254  < 0.001
HbA1c (%) 0.354  < 0.001 0.347  < 0.001 0.221  < 0.001
Peptide C (ng/mL) 0.293  < 0.001 0.315  < 0.001 0.238  < 0.001
Triglyceride (mg/dL) 0.093 0.018 0.247  < 0.001 0.226  < 0.001
HDL-cholesterol (mg/dL) −0.093 0.018 −0.099 0.012 −0.041 0.300
LDL-cholesterol (mg/dL) 0.047 0.234 0.043 0.286 0.043 0.283
Total-cholesterol (mg/dL) 0.039 0.326 0.069 0.078 0.078 0.047
hsCRP (mg/dL) −0.037 0.430 0.061 0.186 0.192  < 0.001
Creatinine (mg/dL) −0.027 0.502 −0.018 0.652 −0.061 0.126
Insulinogenic index −0.255  < 0.001 −0.391  < 0.001 −0.259  < 0.001
SBP (mmHg) 0.147  < 0.001 0.138 0.002 0.106 0.015
DBP (mmHg) 0.110 0.012 0.077 0.080 0.038 0.386
  1. 1hPG 1-h plasma glucose concentration, 2hPG 2-h plasma glucose concentration, DBP Diastolic blood pressure, HbA1c glycated haemoglobin, HDL-c high-density lipoprotein cholesterol, HOMA-β homeostatic model assessment for cell-β function, HOMA-IR homeostatic model assessment for insulin resistance, hsCRP high sensitivity C-reactive protein, LDL-c low-density lipoprotein cholesterol, PG post-load glucose, SBP Systolic blood pressure
  2. *Pearson correlation coefficient, or otherwise specified
  3. Spearman correlation coefficient