Table 4.
Independent factors related to the CC knowledge scores of patients with T1DM by multiple linear regression analysis
| Independent variables | Unstandardised coefficients | Standard coefficient | t-value | P value | Collinearity Statistics |
Model summary | |||
| B | SE | Beta | Tolerance | VIF | R2 | P value | |||
| Constant | 27.225 | 2.800 | 9.724 | <0.0001 | 0.301 | <0.0001 | |||
| CC use (yes) | 4.641 | 0.898 | 0.317 | 5.168 | <0.0001 | 0.851 | 1.175 | ||
| HbA1c levels (high) | −1.039 | 0.311 | −0.194 | −3.338 | 0.001 | 0.945 | 1.058 | ||
| Being taught about CC (> 5 times) | 2.555 | 1.014 | 0.149 | 2.518 | 0.013 | 0.917 | 1.090 | ||
| Type of insulin therapy (insulin pump) | 3.239 | 1.388 | 0.142 | 2.334 | 0.021 | 0.863 | 1.159 | ||
| DM duration (≤15 years) | 1.901 | 0.832 | 0.130 | 2.285 | 0.023 | 0.986 | 1.014 | ||
B, unstandardised beta (rate of change per unit time); CC, carbohydrate counting; DM, diabetes mellitus; HbA1c, glycated haemoglobin; R2, coefficient of variation value; T1DM, type 1 diabetes mellitus; VIF, variance inflation factor.