The oncoprotein and stem cell renewal factor BMI1 associates with poor clinical outcome in oesophageal cancer patients undergoing preoperative chemoradiotherapy

Table 2 Univariate analysis of prognostic factors for OS

Covariate		n	Hazard ratio	95%CI	P-value for OS
Age (years)	≥70	22	1.111	0.552-2.234	0.770
	<70	56
Gender	Male	65	0.312	0.096-1.016	0.023*
	Female	13
Effect of CRT	Effective	56	0.191	0.098-0.370	0.0001***
	Not effective	22
Lymph-node	Positive	34	2.624	1.382-4.983	0.002**
metastasis	Negative	44
Distant metastasis	Positive	12	3.988	2.001-7.947	0.0001***
	Negative	66
Depth of tumour	T₃	40	0.308	0.157-0.602	0.0001***
invasion	T₄	38
Tumour location¹	Upper	13	1.299	0.597-2.827	0.509
	Lower	65
BMI1 expression	positive	24	3.347	1.775-6.313	0.0001***
	negative	54

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