Neutrophil-to-lymphocyte ratio predicts acute kidney injury occurrence after gastrointestinal and hepatobiliary surgery

Table 3 Clinical outcomes of the high and low NLR groups

Variables	Overall (n = 282)	High-NLR group (n = 181)	Low-NLR group (n = 101)	P value
Renal
AKI, n (%)	84 (29.79)	69 (38.12)	15 (14.85)	< 0.001
Severe AKI	28 (9.92)	26 (14.36)	2 (1.98)	0.001
Sepsis, n (%)	45 (15.96)	32 (17.68)	11 (10.89)	0.083
Length of ICU stay (d)	11.36 ± 13.37	11.36 ± 12.58	11.38 ± 14.74	0.990
ICU re-admission, n (%)	40 (14.18)	24 (13.25)	16 (15.84)	0.551
ICU mortality, n (%)	41 (14.54)	24 (13.25)	17 (16.83)	0.415
28-d overall mortality (%)1	80 (28.4)	55 (30.4)	25 (24.8)	0.314

High neutrophil to lymphocyte ratio (NLR) group: NLR ≥ 8.380, Low NLR group: NLR < 8.380; Severe AKI: AKI of stage 2 and stage 3.

¹28-d overall mortality included ICU mortality and 28-d mortality after leaving ICU. AKI: Acute kidney injury; ICU: Intensive care unit.