Table 4.

Relationship between ki-67 index and DFS of patients with BC

Ki-67 index	Death (n)	Survive (n)	χ2	P
< 50%	33	174	7.31	0.0069
≧ 50%	11	26
< 58%	34	178	7.88	0.0050
≧ 58%	10	22