Predicting liver metastasis of gastrointestinal tract cancer by diffusion-weighted imaging of apparent diffusion coefficient values

Table 1 Comparison of clinical data between the effective and ineffective groups

Groups	Average age (yr)	Maximum tumor diameter (cm)
		Before treatment	After 2 wk of treatment	After 12 wk of treatment
Effective group (n = 73)	57.7 ± 5.9	3.45 ± 0.81	3.29 ± 0.75	1.87 ± 0.38
Ineffective group (n = 83)	59.6 ± 6.2	3.62 ± 0.85	3.47 ± 0.88	3.45 ± 0.62
t value	1.953	1.274	1.365	18.874
P value	0.053	0.205	0.174	0