Table 2.

Comparison of preoperative and postoperative laboratory values in patients with or without anastomotic leakage (AL) after colorectal cancer surgery.

	Anastomotic leakage(n = 27)	No anastomotic leakage(n = 471)	p-value
Serum sodium level (mmol/L)
Preoperative	141.26 ± 2.61	140.66 ± 2.90	0.291
Postoperative	137.63 ± 4.29	139.81 ± 3.41	0.002
Leukocyte count (/mm3)
Preoperative	60,389 ± 16,868	61,822 ± 13,956	0.608
Postoperative	89,937 ± 36,045	74,591 ± 23,069	0.038
Neutrophil count (/mm3)
Preoperative	36,600 ± 12,525	38,256 ± 11,733	0.478
Postoperative	69,571 ± 34,915	55,837 ± 21,522	0.053
Neutrophil (%)
Preoperative	59.88 ± 7.86	61.28 ± 9.36	0.446
Postoperative	75.71 ± 12.24	73.57 ± 9.67	0.271