Table 3 C-index of the RECIST groups and ΔADC% groups for 3- and 5- year DFS, LRRFS, DMFS and OS

3-year

 RECIST groups

0.47

(0.41–0.52)

Ref.

0.72

(0.60–0.85)

Ref.

0.54

(0.44–0.64)

Ref.

0.45

(0.33–0.58)

Ref.

 ΔADC% groups

0.71

(0.68–0.75)

< 0.01

0.70

(0.66–0.73)

0.89

0.71

(0.67–0.74)

0.13

0.69

(0.63–0.75)

0.29

5-year

 RECIST groups

0.51

(0.45–0.58)

Ref.

0.69

(0.56–0.84)

Ref.

0.57

(0.48–0.66)

Ref.

0.53

(0.43–0.64)

Ref.

 ΔADC% groups

0.72

(0.68–0.77)

< 0.01

0.70

(0.68–0.73)

0.78

0.71

(0.68–0.75)

0.22

0.60

(0.52–0.68)

0.68