Table 4 Subgroup analysis of the association between 180-minute postprandial C-peptide and DR.

From: Correlation between C-peptide and diabetic retinopathy in patients with type 2 diabetes mellitus: a cross-sectional study

 

Stratified Group

OR(95%Cl)

P value

P for interaction

Age, (years)

< 60

0.86(0.81–0.91)

< 0.0001

0.303

≥ 60

0.92(0.827–1.01)

0.094

Sex

Female

0.86(0.78–0.93)

0.0003

0.237

Male

0.89(0.83–0.94)

< 0.0001

BMI (kg/m2)

< 25

0.88(0.81–0.95)

0.001

0.606

≥ 25

0.88(0.82–0.94)

0.0001

Diabetic duration (years)

< 5.0

0.89(0.83–0.96)

0.002

< 0.0001

5.0–10.0

0.88(0.80–0.96)

0.007

> 10.0

0.98(0.89–1.09)

0.741

Smoking history

No

0.88(0.83–0.93)

< 0.0001

< 0.0001

Yes

0.85(0.77–0.94)

0.003

FBG (mmol/L)

< 7

0.86(0.80–0.92)

< 0.0001

0.007

≥ 7

0.88(0.82–0.94)

0.0001

HbA1c (%)

< 7

0.85(0.76–0.95)

0.006

0.085

≥ 7

0.88(0.83–0.93)

< 0.0001

Fatty liver disease

No

0.84(0.76–0.92)

0.0002

0.0002

Yes

0.89(0.84–0.94)

< 0.0001