Preoperative clinical and laboratory factors associated with early complications after low anterior resection: Exploratory analysis of the eosinophil/lymphocyte ratio

Table 2 Comparisons of the demographic, clinical and preoperative laboratory data of the patients with and without early complications, n (%)

Variables	Patients with early complications (n = 29)	Patients without early complications (n = 76)	P value
Age (years) (mean ± SD)	72.41 ± 9.9	63.76 ± 11	0.001
Gender, female/male	12/19 (41.4/58.6)	27/49 (35.5/64.5)	0.579
Diabetes mellitus	12 (41.4)	13 (17.1)	0.009
Smoking	6 (20.71)	16 (21.1)	0.967
Body mass index (kg/m2, mean ± SD)	23.83 ± 2.5	24.3 ± 2.1	0.337
Operating time (minutes) (mean ± SD)	277.59 ± 71	279.67 ± 53	0.871
Removed LAP count (mean ± SD)	17.66 ± 5.7	16.30 ± 7.1	0.364
Metastasis LAP count (mean ± SD)	2.62 ± 3.5	1.18 ± 2.3	0.019
Surgical technique			0.013
Open	23 (79.3)	40 (52.6)
Laparoscopic	6 (20.7)	36 (47.4)
Protective loop ileostomy	7 (24.1)	16 (21.1)	0.733
Stage classification			0.035
Stage 0	0 (0)	1 (1.3)
Stage 1	2 (6.9)	24 (31.6)
Stage 2	9 (31)	23 (30.3)
Stage 3	18 (62.1)	28 (36.8)
Differentiation			0.313
Well-differentiated	10 (34.1)	38 (50)
Moderately differentiated	18 (62.1)	37 (48.7)
Poorly differentiated	1 (3.4)	1 (1.3)
Mass localization level			0.476
Lower	2 (6.9)	12 (15.8)
Middle	7 (24.1)	18 (23.7)
Upper	20 (69)	46 (60.5)
Neoadjuvant chemoradiotherapy	7 (24.1)	19 (25)	0.927
Albumin (g/L) (mean ± SD)	29.69 ± 4.9	32.76 ± 5	0.006
Hemoglobin (g/dL) (mean ± SD)	10.42 ± 1.5	11.9 ± 2	0.001
Neutrophil/Lymphocyte ratio (mean ± SD)	5.41 ± 3.3	5.22 ± 2.5	0.749
Eosinophil/Lymphocyte ratio (mean ± SD)	0.18 ± 0.1	0.11 ± 0.1	0.050
Lymphocyte/monocyte ratio (mean ± SD)	3.50 ± 1.9	3.05 ± 1.5	0.214
Prognostic nutritional index score (mean ± SD)	36.70 ± 6.8	39.33 ± 5.9	0.055

LAP: Lymphadenopathy.