Regression models for analyzing radiological visual grading studies – an empirical comparison

BMC Medical Imaging

Table 6 Estimated parameters, Goodness-of-fit statistics and dose reduction of BGrank

Model	Coefficient						Goodness-of-fit		Dose Reduction
Model	logCTDI		id2		id4		AIC	Pseudo R²	id2	id4
	Est.	P-value	Est.	P-value	Est.	P-value	AIC	Pseudo R²	id2	id4
regress^a	−4.812	<0.001	−0.863	<0.001	−0.683	<0.001	-	0.1141	16.41 %	13.24 %
regress^a	(−5.299, −4.324)		(−1.035, −0.690)		(−0.856, −0.511)		-	0.1141	(13.82 %, 19.00 %)	(10.53 %, 15.95 %)
ologit^a	−9.793	<0.001	−1.734	<0.001	−1.424	<0.001	2420.57	0.1297	16.23 %	13.53 %
ologit^a	(−10.916, −8.671)		(−2.081, −1.387)		(−1.780, −1.067)		2420.57	0.1297	(13.80 %, 18.65 %)	(10.86 %, 16.20 %)
rologit^a	−5.344	<0.001	−0.881	<0.001	−0.836	<0.001	1308.64	0.1461	15.20 %	14.48 %
rologit^a	(−6.116, −4.571)		(−1.117. −0.645)		(−1.081, −0.592)		1308.64	0.1461	(12.01 %, 18.40 %)	(11.10 %, 17.87 %)
mixed^b	−4.812	<0.001	−0.862	<0.001	−0.683	<0.001	2617. 17	0.000	16.41 %	13.24 %
mixed^b	(−5.286, −4.337)		(−1.030, −0.694)		(−0.851, −0.515)		2617. 17	0.000	(13.88 %, 18.94 %)	(10.60 %, 15.88 %)
meologit^b	−10.460	<0.001	−1.861	<0.001	−1.545	<0.001	2355.74	0.0086	16.30 %	13.73 %
meologit^b	(−10.633, −10.288)		(−2.144, −1.579)		(−1.846, −1.245)		2355.74	0.0086	(14.01 %, 18.59 %)	(11.24 %, 16.23 %)

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