Table 9. Performance ranking of the staging systems based on the concordance-index (c-index).

Rank	Score	c-index	95% CI
1	CLIP	0.71	0.68 to 0.75
2	JIS	0.70	0.66 to 0.74
3	Okuda	0.66	0.63 to 0.69
4	BCLC	0.66	0.62 to 0.69
5	GETCH	0.64	0.61 to 0.67
6	TNM	0.64	0.60 to 0.68
7	Child	0.63	0.60 to 0.67

A higher c-index indicates better prognostic ability.