Table 4.

Postoperative total parenteral nutrition duration

	Group 1	Group 2	P
Patient number	66	108
Diagnosis (colon/rectal cancer)	31/35	35/73
Gender (male/female)	32/34	59/49	0.434
Tumor stage			0.493
NRS 2002 score	1.92 ± 0.94	1.99 ± 1.05	0.676
Preoperative serum glucose (mmol/L)	6.10 ± 1.86	5.75 ± 1.17	0.134
Preoperative albumin (g/L)	38.47 ± 4.44	39.51 ± 6.37	0.249
Preoperative potassium (mmol/L)	3.98 ± 0.38	6.57 ± 1.84	0.270
Preoperative sodium (mmol/L)	140.98 ± 3.23	139.58 ± 14.1	0.435
POD1 serum glucose (mmol/L)	8.59 ± 3.39	7.37 ± 2.06	0.100
POD1 albumin (g/L)	32.24 ± 3.65	35.49 ± 4.11	0.725
POD1 potassium (mmol/L)	4.05 ± 0.44	3.99 ± 0.45	0.424
POD1 sodium (mmol/L)	136.35 ± 3.59	135.72 ± 14.50	0.763
POD5 serum glucose (mmol/L)	7.59 ± 3.57	6.48 ± 1.32	0.006
POD5 albumin (g/L)	31.79 ± 3.53	39.91 ± 3.66	0.063
POD5 potassium (mmol/L)	4.21 ± 0.50	4.16 ± 0.53	0.553
POD5 sodium (mmol/L)	136.5 ± 18.60	137.84 ± 2.81	0.348
Complications			0.533
Postoperative hospital stay (d)	15.59 ± 5.32	15.87 ± 6.45	0.761
Cost of hospitalization (RMB)	47724.14 ± 16945.17	38598.73 ± 8349.79	0.000
Postoperative outcome			0.166

Group 1: The duration of postoperative total parenteral nutrition (TPN) was not less than 7 d; Group 2: The duration of postoperative TPN was less than 7 d. NRS: Nutrition Risk Screening.