Prognostic nutritional index predicts postoperative complications and long-term outcomes of gastric cancer

Table 1 Relationship between clinical characteristics and prognostic nutritional index n (%)

Characteristic	PNI-high (n = 245)	PNI-low (n = 141)	χ2	P value
Age (yr)			5.456	0.019
< 65	168 (68.6)	80 (56.7)
≥ 65	77 (31.4)	61 (43.3)
Gender			1.592	0.207
Female	75 (30.6)	52 (36.9)
Male	170 (69.4)	89 (63.1)
Tumor location			3.544	0.315
Upper 1/3	80 (32.7)	39 (27.7)
Middle 1/3	26 (10.6)	20 (14.2)
Lower 1/3	114 (46.5)	61 (43.3)
2/3 or more	25 (10.2)	21 (14.9)
BMI			10.348	0.001
< 18.5 kg/m2	31 (12.7)	36 (25.5)
≥ 18.5 kg/m2	214 (87.3)	105 (74.5)
Bleeding			0.677	0.411
≤ 200 mL	99 (40.4)	51 (36.2)
> 200 mL	146 (59.6)	90 (63.8)
Tumor size			11.628	0.001
< 5 cm	107 (43.7)	38 (26.2)
≥ 5 cm	138 (56.6)	103 (73.8)
Borrmann type			0.720	0.396
I/II	94 (38.4)	48 (34.0)
III/IV	151 (61.6)	93 (66.0)
Histology			0.610	0.435
Differentiated	68 (27.8)	34 (24.1)
Undifferentiated	177 (72.2)	107 (75.9)
Extranodal metastasis			4.155	0.042
Positive	37 (15.1)	33 (23.4)
Negative	208 (84.9)	108 (76.6)
Serosal invasion			4.257	0.039
Yes	189 (77.1)	121 (85.8)
No	56 (22.9)	20 (14.2)
Lymph node metastasis			18.913	< 0.001
pN0	90 (36.7)	34 (24.1)
pN1	41 (16.7)	17 (12.1)
pN2	56 (22.9)	27 (19.1)
pN3	58 (23.7)	63 (44.7)
TNM stage			6.859	0.032
I	29 (11.8)	10 (7.1)
II	71 (29.0)	29 (20.6)
III	145 (59.2)	102 (73.2)
Postoperative complications			12.391	< 0.001
Yes	39 (15.9)	44 (31.2)
No	205 (84.1)	97 (68.8)

PNI: Prognostic nutritional index; BMI: Body mass index.