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Table 3 Multivariable linear model for diabetes-specific quality of life

From: Vitamin D deficiency is associated with poorer satisfaction with diabetes-related treatment and quality of life in patients with type 2 diabetes: a cross-sectional study

Coefficient

Estimate

SE

p-value

Intercept

−0.214

0.171

0.218

Vitamin D deficiencyb

−0.283

0.104

0.007

Diabetes duration (years)

−0.041

0.039

0.297

Diabetes duration-squared (years2)

0.002

0.002

0.271

Retinopathy

0.299

0.346

0.389

Insulin

1.409

0.793

0.077

Retinopathya insulin

−2.771

0.918

0.003

Diabetes durationa insulin

−0.588

0.234

0.013

Diabetes duration-squareda insulin

0.033

0.014

0.022

Diabetes durationa retinopathy

−0.112

0.079

0.161

Diabetes duration-squareda retinopathy

0.003

0.004

0.428

Diabetes durationa retinopathya insulin

0.743

0.247

0.003

Diabetes duration-squareda retinopathya insulin

−0.038

0.015

0.011

  1. Multiple R-squared: 24.97%. adenotes the existence of interactions between the variables. bVitamin D deficiency is defined as levels of 25(OH) D below 15 ng/mL (37.4 nmol/L)