Association between neutrophil-to-lymphocyte ratio and major postoperative complications after carotid endarterectomy: A retrospective cohort study

Table 2 Outcome variables, stratified by major postoperative complications

	Total	WOPC group	PC group	P
No. of cases	206	166	40
Major postoperative complications	40 (19.42%)	0	40 (100%)
Neurological complications	16 (7.77%)	0	16 (40.0%)	< 0.001a
Cardiac complications	6 (2.91%)	0	6 (15.0%)	< 0.001a
Respiratory complications	14 (6.80%)	0	14 (35.0%)	< 0.001a
AKI	9 (4.37%)	0	9 (22.50%)	< 0.001a
Fever	10 (4.85%)	4 (2.41%)	6 (15.0%)	< 0.001a
Surgical site infections	3 (1.46%)	1 (0.60%)	2 (5.0%)	0.097
Urinary infections	3 (1.46%)	1 (0.60%)	2 (5.0%)	0.097
DVT	5 (2.43%)	1 (0.60%)	4 (10.0%)	< 0.001a
Length of stay in the ICU (d)	1.0 (0–1.0)	1.0 (0–1.0)	1.0 (1.0–1.0)	0.055
Hospitalization stay (d)	15.56 ± 4.30	15.16 ± 3.63	17.20 ± 6.17	0.105
Cost of hospitalization (CNY)	24085.15 (21694.72–28395.65)	23786.67 (21568.68–27139.36)	27127.94 (22326.75–31629.55)	< 0.001a

^aP < 0.05, statistically significant difference was observed between two groups.

AKI: Acute kidney injury; CEA: Carotid endarterectomy; DVT: Deep venous thrombosis; ICU: Intensive care unit; PC: Post-CEA complications; WOPC: Without post-CEA complications.