Skip to main content

Table 4 Multivariable analysis of relationship of incretins and dipeptidyl peptidase 4 with insulin resistance indexes

From: Incretins in patients with rheumatoid arthritis

 

β Coefficient (95% CI)

β Coefficient (95% CI)

HOMA-IR

p Value

p Value*

HOMA2%B-C-peptide

p Value

p Value*

GLP-1, ng/ml

      

 Patients with RA

0.00 (−0.93 to 0.93)

0.99

0.068

155 (105 to 205)

0.000

0.003

 Control subjects

−1.34 (−2.46 to −0.23)

0.018

37 (−22 to 96)

0.22

GIP, ng/ml

 Patients with RA

0.32 (0.10 to 0.53)

0.004

0.42

59 (50 to 68)

0.000

0.29

 Control subjects

0.14 (−0.22 to 0.51)

0.44

49 (31 to 66)

0.000

DPP-4, ng/ml

 Patients with RA

−0.002 (−0.003 to −0.002)

0.000

0.39

−0.12 (−0.16 to −0.09)

0.000

0.71

 Control subjects

−0.003 (−0.003 to −0.002)

0.000

−0.13 (−0.18 to 0.09)

0.000

  1. Abbreviations: DPP-4 Dipeptidyl peptidase 4, GIP Gastric inhibitory polypeptide, GLP-1 Glucagon-like peptide 1, HOMA2-%B Homeostatic model assessment of β-cell production calculated with C-peptide, HOMA2-IR Homeostatic model assessment calculated with insulin, RA Rheumatoid arthritis
  2. All analyses were adjusted for age, sex, waist circumference, dyslipidemia, statins, antihypertensive treatment, and CPR and cholesterol levels. GLP-1, GIP and DPP-4 are considered independent variables. β Coefficients of the relation of GLP-1, GIP and DPP-4 (independent variables) with HOMA2 indexes (dependent variables) are disclosed. p Values are the linear regression adjusted p values of these associations. p* Value refers to the statistical significance of the interaction factor when adding GLP-1 × RA, GIP × RA, and DPP-4 × RA as such interaction factors to the model. p<0.05 are depicted in bold