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Table 4 Multivariable linear model for final Diabetes Treatment Satisfaction Questionnaire score

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

Standard error

p-value

Intercept

25.382

1.039

< 0.001

Vitamin D deficiencyb

−1.734

0.740

0.020

Insulin

−1.500

0.961

0.119

Physical activity > 25 min

2.173

0.723

0.003

Current smoker

0.548

0.936

0.559

Former smoker

−1.628

0.803

0.043

Diabetes duration (years)

0.156

0.091

0.085

Retinopathy

1.954

1.191

0.102

Diabetes durationa retinopathy

−0.265

0.107

0.014

  1. Multiple R-squared: 12.78%. 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)