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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)