Table 2.

Univariate and multivariate analyses of the association of the prognostic characteristics with OS

	Univariate			Multivariate
	Patients (n)	MS (months)	P-value	HR	95% CI	P-value
Age (years)			0.083
≥60	72	14
<60	72	17
Sex			0.534
Male	82	14
Female	62	16
ASA score			0.032
1+2	114	18
3	30	12
CA19-9 (U/mL)			0.874
≥200	97	14
<200	47	16
WBC count (/L)			0.448
≥5×109	84	13
<5×109	60	17
Lymphocyte count (/L)			0.022
≥1.3×109	69	19
<1.3×109	75	13
Monocyte count (/L)			0.081
≥0.4×109	84	12
<0.4×109	60	18
Tumor location			0.182
Head	106	16
Body/tail	38	14
Tumor size (cm)			0.204
≥3.0	36	14
<3	108	19
T stage			0.005
T1+T2	24	22
T3+T4	120	14
Lymph node status			0.001
N0	76	18
N1	68	13
TNM stage			0.000	5.631	3.148–9.182	0.000
I+II	76	18
III	68	13
Pathological differentiation			0.005	0.566	0.402–0.932	0.021
Well/moderate	71	17
Poor	73	13
LMR			0.000	0.148	0.085–0.252	0.000
≥2.86	34	19
<2.86	38	12

Abbreviations: OS, overall survival; MS, median survival; ASA, American Society of Anesthesiologists; WBC, white blood cells; CI, confidence interval; HR, hazard ratio; LMR, lymphocyte to monocyte ratio; TNM, tumor–node–metastasis.