Cell Proliferation (KI-67) Expression Is Associated with Poorer Prognosis in Nigerian Compared to British Breast Cancer Women

Table 5

Cox multivariate analysis of probability of survival in tumours expressing KI-67 in Nigerian and UK breast cancer.

	KI-67 positive expression
Variables	P value	Hazard ratio	95% CI
			Lower	Upper
Racial difference; Nigeria versus UK	<0.001	4.18	2.68	6.53
Lymph node	0.69	1.09	0.71	1.67
Tumour size	0.12	1.12	0.96	1.31
ER	0.21	0.79	0.55	1.14