TABLE 3.

Results of the equivalence test between groups based on actual and predicted body weight for CTDIvol and DLP.

CTDIvol/DLP	Equivalence margin	95% CI	p
CTDIvol (mGy)
Weight ≤ 50 kg		−0.090 to 0.018	<0.001
Weight 50−60 kg		−0.030 to 0.046	<0.001
Weight 60−70 kg	0.375	−0.061 to 0.018	<0.001
Weight 70−80 kg		−0.073 to 0.014	<0.001
Weight ≥ 80 kg		−0.034 to 0.124	<0.001
DLP (mGy·cm)
Weight ≤ 50 kg		−3.443 to 1.149	<0.001
Weight 50−60 kg		−1.471 to 1.757	<0.001
Weight 60−70 kg	16.248	−2.560 to 0.822	<0.001
Weight 70−80 kg		−3.379 to 0.378	<0.001
Weight ≥ 80 kg		−1.259 to 6.309	<0.001

Note: The equivalence test (two one‐sided tests) was used to calculate the p‐value.

Abbreviations: CI, confidence interval; CTDI_vol, volume computed tomography dose index; DLP, dose–length product.