Demographic and Clinical Characteristics
| Characteristic | Control group (n = 110) | Test group (n = 110) | P |
| Age (y) | 60.2 ± 12.5 | 61.1 ± 12.5 | 0.615 |
| Female (n) | 34 (31.5%) | 35 (31.8%) | 0.957 |
| Weight (kg) | 83.5 ± 17.0 | 83.3 ± 17.1 | 0.949 |
| BMI | 28.7 ± 6.1 | 27.2 ± 4.4 | 0.326 |
| Total DLP (for 110 patients) (mGy-cm) | 141.0 ± 78.8 (1.97 ± 1.10 mSv) | 113.5 ± 53.6 (1.59 ± 0.75 mSv) | 0.0037 |
| DLP stratified by BMI (mGy-cm) | |||
| Normal weight (BMI, 18.5–24.9) | 111.2 ± 84.7 (1.56 ± 1.19 mSv) | 76.1 ± 49.0 (1.07 ± 0.69 mSv) | 0.044 |
| Overweight (BMI, 25–29.9) | 133.0 ± 55.1 (1.86 ± 0.77 mSv) | 112.4 ± 52.1 (1.57 ± 0.73 mSv) | 0.047 |
| Obese (BMI, >30) | 169.2 ± 74.1 (2.37 ± 1.04 mSv) | 142.3 ± 28.9 (1.99 ± 0.40 mSv) | 0.0004 |
Values are expressed as mean ± SD, except for age.