Table 2. Radiation exposure stratified according to gender and BMI.
| Variables | Female (n=343) | Male (n=383) | P value |
|---|---|---|---|
| Effective dose (mSv), median (IQR) | |||
| Overall | 2.3 (1.4-5.2) | 3.6 (2.5-5.9) | <0.001 |
| BMI <25 | 1.4 (1.2-2.2) | 2.1 (1.4-3.2) | <0.001 |
| BMI 25-29.9 | 2.0 (1.4-3.2) | 3.2 (2.4-4.3) | <0.001 |
| BMI 30-34.9 | 3.1 (2.3-5.8) | 4.4 (3.4-7.0) | <0.001 |
| BMI ≥35 | 7.2 (4.9-9.1) | 7.7 (6.0-11.3) | 0.149 |
| CTDIvol (mGy), median (IQR) | |||
| Overall | 8.6 (4.9-20.0) | 12.7 (7.3-22.7) | <0.001 |
| BMI <25 | 4.9 (3.8-7.7) | 6.4 (4.3-10.1) | 0.035 |
| BMI 25-29.9 | 6.7 (5.0-12.7) | 11.5 (7.7-15.3) | <0.001 |
| BMI 30-34.9 | 13.3 (8.5-24.6) | 17.3 (11.8-25.0) | 0.106 |
| BMI ≥35 | 26.6 (17.4-35.5) | 28.9 (23.2-37.8) | 0.196 |
BMI, body mass index (kg/m2); IQR, interquartile range; CTDIvol, CT dose index volume.