Nutritional risk index as a predictor of postoperative wound complications after gastrectomy

Table 2 Characteristics of patients according to the nutritional risk index on the 5th postoperative day

Characteristic		NRI			P value
		< 97.5	≥97.5	All
		(n = 566, 84.6%)	(n = 103, 15.4%)	(n = 669)
Gender, n (%)	Male	346 (61)	86 (83)	432	0.0001
	Female	220 (39)	17 (17)	237
Age, mean ± SD		57.15 ± 11.7	54.70 ± 9.69	56.77 ± 11.44	0.0352
Disease progression, n (%)	EGC	307 (54)	72 (70)	379	0.0031
	AGC	259 (46)	31 (30)	290
Type of operation, n (%)	B-I	355 (63)	89 (86.4)	444	0.0001
	B-II	61 (11)	5 (4.9)	66
	TG	150 (26)	9 (8.7)	159
Comorbid diseases, n (%)	Hypertension	130 (23)	29 (28.1)	159	0.3651
	Diabetes mellitus	66 (11.7)	20 (19.4)	86
	Pulmonary tuberculosis	22 (3.9)	7 (6.8)	29
	Cardiovascular diseases	13 (2.3)	3 (2.9)	16
	Hepatitis	40 (7.1)	5 (4.8)	45
	Others	18 (3)	1 (1)	19
	None	277 (50)	38 (36.9)	315
Postoperative hospital stay (d, mean ± SD)		12.76 ± 4.02	12.01 ± 2.45	12.64 ± 3.82	0.1602
Postoperative wound complication, n (%)		62 (10.9)	4 (3.8)	66 (9.86)	0.0271

NRI: Nutrition risk index; EGC: Early gastric cancer; AGC: Advanced gastric cancer; B-I: Subtotal gastrectomy with Billroth–Ireconstruction; B-II: Subtotal gastrectomy with Billroth–II reconstruction; TG: Total gastrectomy.

¹Fisher’s exact test;

²Mann-Whitney U test.