Variability of radiation doses of cardiac diagnostic imaging tests: the RADIO-EVINCI study (RADIationdOse subproject of the EVINCI study)

Table 4 Multivariable regression analysis

Factor		B	95% CI	Standard error	R square change	P
CCTA
Model 1: age		0,17	0,085;0,255	0,043	0,040	<0,001
Model 2: equipment		−0,55	−1,02; −0,088	0,24	0,012	0,020
SPECT
Model 1:	BMI	0,199	0,125;0,273	0,038	0,163	<0,001
Model 1:	sex	−1,151	−1,836; −0,465	0,348	0,163	0,001
Model 2: equipment		−0,418	−0,605; −0,231	0,095	0,070	<0,001
Model 3: protocol		2,129	1,545; 2,713	0,296	0,150	<0,001
ICA
Model 1:	BMI	1,225	0,751;1,700	0,240	0,191	<0,001
Model 1:	sex	7,435	2,939;11,931	2,278	0,191	0,001
Model 2: equipment		−4,276	−6,137; −2,415	0,943	0,087	<0,001

Model 1: Predictors BMI, age, sex; Model 2: Predictors BMI, age, sex, type of equipment; Model 3: Predictors BMI, age, sex, type of equipment, type of protocol (1 or 2 days protocol)

ISSN: 1471-2261