Table 3. Univariate logistic regression analysis of 1-mm and 5-mm thickness CT data.

Variable	No recurrence	Recurrence	OR	95% CI		P value
1-mm thickness CT
Diameter, mm	23.67 ± 10.17	35.19 ± 13.13	1.09	1.05	1.13	<0.001
Perimeter, mm	80.49 ± 40.61	119.88 ± 56.74	1.02	1.01	1.03	<0.001
Area, mm2	245.82 ± 240.12	564.51 ± 405.23	1.003	1.001	1.004	<0.001
Mean attenuation, HU	-176.13 ± 229.12	-4.33 ± 116.0	1.01	1.002	1.01	0.002
Circularity	0.47 ± 0.15	0.51 ± 0.17	5.85	0.39	88.87	0.20
Aspect ratio	1.46 ± 0.34	1.52 ± 0.35	1.60	0.52	4.97	0.42
Roundness	0.72 ± 0.14	0.69 ± 0.14	0.24	0.01	4.56	0.34
Skewness	-0.09 ± 0.87	-0.28 ± 1.06	0.77	0.46	1.28	0.31
Kurtosis	1.08 ± 3.29	2.18 ± 4.99	1.06	0.97	1.16	0.18
Entropy	6.78 ± 0.45	6.73 ± 0.47	0.84	0.34	2.07	0.70
5-mm thickness CT
Diameter, mm	23.32 ± 9.94	33.09 ± 12.31	1.08	1.04	1.12	<0.001
Perimeter, mm	72.09 ± 33.51	102.54 ± 42.47	1.02	1.01	1.03	<0.001
Area, mm2	263.35 ± 248.47	530.73 ± 381.99	1.002	1.001	1.004	<0.001
Mean attenuation, HU	-238.25 ± 221.30	-33.52 ± 122.58	1.01	1.003	1.01	<0.001
Circularity	0.59 ± 0.16	0.61 ± 0.15	2.17	0.15	32.22	0.57
Aspect ratio	1.45 ± 0.35	1.52 ± 0.39	1.64	0.56	4.75	0.37
Roundness	0.72 ± 0.14	0.70 ± 0.15	0.26	0.01	4.84	0.36
Skewness	-0.22 ± 0.93	-0.94 ± 1.09	0.50	0.33	0.76	0.001
Kurtosis	0.45 ± 2.53	2.81 ± 5.23	1.18	1.05	1.32	0.005
Entropy	6.92 ± 0.50	6.72 ± 0.52	0.51	0.24	1.07	0.07

CI, confidence interval; HU, Hounsfield unit; OR, odds ratio.