Radiomics of rectal cancer for predicting distant metastasis and overall survival

Table 2 Comparison of the models between the metastasis group and the non-metastasis group, and between the death group and the survival group

	Metastasis	Non-metastasis	P value	Death	Survival	P value
3-yr1
n (%)	51 (34.5)	97 (65.5)		26 (17.6)	122 (82.4)
Rad-score	0.46 ± 0.21	0.32 ± 0.24	< 0.001	0.45 ± 0.20	0.35 ± 0.24	0.023
Clinical	0.52 ± 0.20	0.30 ± 0.21	< 0.001	0.55 ± 0.20	0.34 ± 0.22	< 0.001
Combined	0.60 ± 0.23	0.28 ± 0.26	< 0.001	0.62 ± 0.22	0.34 ± 0.28	< 0.001
2-yr1
n (%)	41 (27.7)	107 (72.3)		15 (10.1)	133 (89.9)
Rad-score	0.44 ± 0.20	0.34 ± 0.25	0.009	0.40 ± 0.17	0.35 ± 0.25	0.368
Clinical	0.51 ± 0.19	0.32 ± 0.23	< 0.001	0.63 ± 0.15	0.35 ± 0.22	< 0.001
Combined	0.56 ± 0.23	0.31 ± 0.28	< 0.001	0.65 ± 0.19	0.36 ± 0.29	< 0.001
1-yr1
n (%)	25 (16.9)	123 (83.1)		2 (1.4)	146 (98.6)
Rad-score	0.39 ± 0.19	0.36 ± 0.25	0.453	0.29 ± 0.36	0.37 ± 0.24	0.676
Clinical	0.55 ± 0.19	0.34 ± 0.22	< 0.001	0.75 ± 0.24	0.37 ± 0.23	0.258
Combined	0.56 ± 0.23	0.35 ± 0.29	0.001	0.60 ± 0.52	0.38 ± 0.29	0.302

The data are presented as the mean ± standard deviation.

¹During the time from surgery to the presence of distant metastasis or death.