Table 2 Univariate and multivariate linear regression results of the mean glandular dose per view
Univariate linear regression | Multivariate linear regression | |||||
|---|---|---|---|---|---|---|
Beta (SE) | p value | R 2 | Beta (SE) | p value | Adjusted R 2 | |
Age (years) | −0.013 (0.001) | <0.0001 | 0.038 | −0.002 (0.001) | 0.0358 | 0.820 |
Mammographic breast size (mm) | 0.004 (0.001) | <0.0001 | 0.016 | 0.002 (0.0004) | <0.0001 | |
Mammographic breast composition | ||||||
Non-dense | Reference | 0.094 | Reference | |||
Dense | 0.462 (0.031) | <0.0001 | 0.201 (0.017) | <0.0001 | ||
Breast-conserving surgery | ||||||
No | Reference | Reference | ||||
Yes | 0.249 (0.046) | <0.0001 | 0.014 | 0.038 (0.020) | 0.0605 | |
Peak kilovoltage (kVp) | 0.074 (0.008) | <0.0001 | 0.039 | |||
Current (mAs) | 0.014 (0.0004) | <0.0001 | 0.384 | 0.014 (0.0002) | <0.0001 | |
Compressed breast thickness (mm) | 0.013 (0.001) | <0.0001 | 0.053 | 0.008 (0.001) | <0.0001 | |
Breast compression force (N) | 0.006 (0.001) | <0.0001 | 0.058 | 0.003 (0.0003) | <0.0001 | |