Can composite performance measures predict survival of patients with colorectal cancer?

Table 4 Correlation matrix of composite performance scores calculated by different methods

Cohort	Method	All-or-none	70% standard	Equal weight	AHP	PCA
1	All-or-none	1
	70% standard	0.149b	1
	Equal weight	0.500b	0.784b	1
	AHP	0.476b	0.710b	0.918b	1
	PCA	0.288b	0.664b	0.819b	0.853b	1
2	All-or-none	NA
	70% standard	NA	1
	Equal weight	NA	0.843b	1
	AHP	NA	0.753b	0.891b	1
	PCA	NA	0.436b	0.502b	0.823b	1
3	All-or-none	1
	70% standard	0.125b	1
	Equal weight	0.429b	0.794b	1
	AHP	0.416b	0.700b	0.904b	1
	PCA	0.071b	0.407b	0.484b	0.419b	1

Cohort 1: Colon cancer patients stage < III; Cohort 2: Colon cancer patients stage III; Cohort 3: Rectal cancer patients.

^bP < 0.01 vs control. AHP: Analytic hierarchy process; NA: Not applicable; PCA: Principal component analysis.