Table 1:

ADC parameters, volume, and T-stage of the primary tumor and the patient age for prediction of treatment response

Parameter	Whole Group (N = 158) (Mean)	Local Failure (n = 27) (Mean)	Local Control (n = 131) (Mean)	Student t Test (P Value)	Univariate Logistic Regression
					P Value	Odds Ratio (95% CI)
ADC mean (×10−3 mm2/s)	0.91 ± 0.11	0.90 ± 0.12	0.91 ± 0.11	.879	.878	0.75 (0.02–29.45)
ADC skewness	0.68 ± 0.47	0.45 ± 0.40	0.72 ± 0.47	.006a	.007a	0.22 (0.08–0.67)
ADC kurtosis	4.93 ± 1.87	4.19 ± 1.29	5.08 ± 1.94	.024a	.024a	0.65 (0.44–0.95)
Primary tumor volume (mL)	24.63 ± 17.99	28.20 ± 17.90	23.89 ± 17.99	.256	.298	1.011 (0.99–1.03)
T-stage
T1, T2	74	12	62	NA	.785	1.123 (0.49–2.58)
T3, T4	84	15	69
Patient age (yr)	50.19 ± 10.34	49.74 ± 11.34	50.28 ± 10.17	.805	.804	1.00 (0.96–1.04)

Note:—NA indicates not applicable.

^aStatistically significant.