Table 3.

Prognostic factors for OS in univariate analysis (N=55)

Variables	Median OS (months)	95% CI	P-value
Sex
Male	17.03	12.71–21.353	0.529
Female	19.53	9.45–29.61
Age (years)
≤65	18.37	14.81–21.93	0.365
>65	23.93	13.24–34.62
Disease status
Metastatic	20.33	15.98–24.68	0.728
Recurrent	17.03	15.37–18.69
Primary site
Colon	20.33	16.37–18.10	0.585
Rectum	16.20	14.30–23.23
No of metastatic sites
0–1	18.37	2.33–34.41	0.322
≥2	19.53	15.05–24.01
Liver metastasis
Yes	18.37	14.88–21.86	0.033
No	29.63	20.58–38.68
Palliative surgery
Yes	23.93	15.93–31.93	0.036
No	16.20	11.79–20.61
CA 19-9
≤37 IU/mL	20.90	12.01–29.79	0.120
>37 IU/mL	17.40	9.91–24.89
Tissue KRAS
Mutant	18.37	14.40–22.34	0.281
Wild type	20.90	11.51–30.29
CXCR4
≤240.45 pg/mL	26.50	17.37–35.63	0.046
>240.45 pg/mL	17.03	14.67–19.39

Abbreviations: CI, confidence interval; CXCR4, C-X-C chemokine receptor type 4; OS, overall survival.