Variables | β | t | p value |
---|---|---|---|
Steps 1 | |||
Constant |  | 12.720 |  < 0.001 |
DSM | 0.030 | 0.487 | 0.627 |
DD |  − 0.204 |  − 3.197 | 0.002* |
Depression |  − 0.346 |  − 5.314 |  < 0.00* |
Self-efficacy | 0.219 | 3.299 | 0.001* |
Family support | 0.007 | 0.110 | 0.912 |
Adjusted R2 = 0.314; F = 19.62 and p < 0.001 |  | ||
Step 2 | |||
Constant |  | 11.440 |  < 0.001 |
DSM | 0.064 | 1.039 | 0.300 |
DD |  − 0.210 |  − 3.324 | 0.001* |
Depression |  − 0.356 |  − 5.468 |  < 0.001* |
Self-efficacy | 0.211 | 3.215 | 0.002* |
Family support | 0.005 | 0.081 | 0.935 |
Gender |  − 0.039 |  − 0.604 | 0.546 |
Marital status |  − 0.057 |  − 0.933 | 0.352 |
Level of education | 0.011 | 0.176 | 0.861 |
Employment status | 0.083 | 1.246 | 0.214 |
Income | 0.144 | 2.280 | 0.024 |
Adjusted R2 = 0.336; F = 11.27 and p < 0.001 |  | ||
Step 3 | |||
Constant |  | 7.707 |  < 0.001 |
DSM | 0.062 | 0.989 | 0.324 |
DD |  − 0.207 |  − 3.114 | 0.002* |
Depression |  − 0.365 |  − 5.431 |  < 0.001* |
Self-efficacy | 0.202 | 2.998 | 0.003* |
Family support |  − 0.006 |  − 0.098 | 0.922 |
Gender |  − 0.021 |  − 0.292 | 0.770 |
Marital status |  − 0.055 |  − 0.856 | 0.393 |
Level of education | 0.001 | 0.019 | 0.985 |
Employment status | 0.090 | 1.308 | 0.192 |
Income | 0.140 | 2.138 | 0.034* |
BMI (kg/m2) |  − 0.050 |  − 0.816 | 0.416 |
Duration of DM |  − 0.005 |  − 0.090 | 0.928 |
Smoking status |  − 0.042 |  − 0.660 | 0.510 |
Number of diabetes-related complications | 0.013 | 0.214 | 0.831 |
Fasting blood glucose |  − 0.043 |  − 0.715 | 0.475 |
Hypertension |  − 0.013 |  − 0.194 | 0.846 |
Type of DM medication | 0.053 | 0.840 | 0.402 |
Adjusted R2 = 0.321; F = 6.64 and p < 0.001 |  |