Table 2.

Univariate linear regression of the 15 categorical variables and log maxminhauc and log maxminhrp – cohorts 1 and 2

	log maxminhauc – cohort 1				log maxminhauc – cohort 2				log maxminhrp – cohort 1				log maxminhrp – cohort 2
Variable	Beta	SE	t	P >	Beta	SE	t	P >	Beta	SE	t	P >	Beta	SE	t	P >
Both renal margins irregular	0.71	0.20	3.58	<0.01	0.50	0.17	2.98	<0.01	0.55	0.24	2.28	0.02	0.49	0.15	3.35	<0.01
Both renal margins well defined	−0.63	0.13	−5.00	<0.01	−0.40	0.11	−3.56	<0.01	−0.60	0.11	−5.42	<0.01	−0.40	0.11	−3.65	<0.01
Left renal margins well defineda	−0.58	0.15	−3.92	<0.01	−0.24	0.17	−1.41	0.16	−0.53	0.13	−4.26	<0.01	−0.23	0.17	−1.40	0.16
Right renal margins well defineda	−0.57	0.16	−3.47	<0.01	−0.57	0.13	−4.49	<0.01	−0.61	0.15	−4.19	<0.01	−0.54	0.12	−4.52	<0.01
Left no cortical defects	−0.53	0.12	−4.35	<0.01	−0.14	0.11	−1.23	0.22	−0.37	0.12	−3.05	<0.01	−0.10	0.10	−0.96	0.34
Left renal margins smooth	−0.52	0.13	−4.03	<0.01	−0.18	0.15	−1.24	0.22	−0.38	0.13	−2.84	0.01	−0.22	0.13	−1.69	0.09
Left renal margins irregular	0.50	0.13	3.76	<0.01	0.18	0.15	1.24	0.22	0.35	0.14	2.49	0.01	0.22	0.13	1.69	0.09
Both renal margins smooth	−0.35	0.13	−2.75	<0.01	−0.09	0.11	−0.81	0.42	−0.29	0.12	−2.42	0.02	−0.18	0.10	−1.76	0.08
Right no cortical defects	−0.34	0.16	−2.17	0.03	0.01	0.10	−0.10	0.92	−0.30	0.15	−2.00	0.05	−0.09	0.10	−0.90	0.37
Left < 2 cortical defects	0.31	0.12	2.51	0.01	0.14	0.11	1.22	0.22	0.16	0.13	1.26	0.21	0.09	0.11	0.80	0.43
Right renal margins smooth	−0.28	0.16	−1.75	0.08	−0.24	0.12	−1.97	0.05	−0.30	0.14	−2.12	0.04	−0.31	0.11	−2.85	0.01
Right renal margins irregular	0.23	0.17	1.36	0.18	0.24	0.12	1.97	0.05	0.19	0.16	1.17	0.25	0.31	0.11	2.85	0.01
Right < 2 cortical defects	0.12	0.15	0.81	0.42	0.07	0.11	0.66	0.51	0.11	0.15	0.73	0.47	−0.10	0.12	−0.84	0.40

Listed in ascending order of the P value of the beta-coefficient of cohort 1. The variables for which P were ≤0.2 or >0.2 for all are in bold. A negative beta-coefficient predicted good reproducibility and a positive beta-coefficient predicted decreased reproducibility.

Beta, beta-coefficients.

^aThe beta-coefficients and t-values of left renal margins well defined and left renal margins poorly visualised, right renal margins well defined and right renal margins poorly visualised were equal in magnitude but of opposite sign. Therefore, only the results of left renal margins well defined and right renal margins well defined are presented.