Table 2. The multivariate analysis of the risk factors for predicting the survival period (cox proportional hazards regression model).

Factors	P	Hazard ratio	95% Confidence interval
Positive ratio of p-HSP27 (low)	0.0265	2.135	1.089–4.523
Histological type (poor)	0.0103	2.972	1.309–6.470

Abbreviations: p-HSP27: Phosphorylated HSP27

Poor: Poorly differentiated adenocarcinoma.