Clinical significance of the neutrophil-lymphocyte ratio as an early predictive marker for adverse outcomes in patients with acute pancreatitis

Table 1 Patient demographics, pancreatitis etiology and laboratory findings comparing mild and severe acute pancreatitis at day 0

	All (n = 490)	MAP (n = 420)	SAP (n = 70)	P value
Age (yr)	52.36 ± 16.98	52.34 ± 17.15	52.46 ± 16.01	0.958
Sex: male (%)	352 (71.8)	297 (70.7)	55 (78.6)	0.176
Etiology, n (%)				0.839
Gallstones	136 (27.8)	119 (28.3)	17 (24.3)
Alcohol	250 (51.0)	212 (50.5)	38 (54.3)
Hypertriglyceridemia	8 (1.6)	6 (1.4)	2 (2.9)
Idiopathic	84 (17.1)	73 (17.4)	11 (15.7)
Cancer	12 (2.4)	10 (2.4)	2 (2.9)
Laboratory (at admission)
WBC (× 109/L)	11.90 ± 5.61	11.80 ± 5.68	12.53 ± 5.14	0.315
CRP (mg/dL)	6.55 ± 8.10	5.90 ± 7.32	10.32 ± 11.03	0.001
Hct (%)	41.51 ± 5.78	41.61 ± 5.81	40.89 ± 5.52	0.330
BUN (mg/dL)	14.91 ± 9.51	14.76 ± 9.63	15.84 ± 8.76	0.382
Calcium (mg/dL)	8.50 ± 0.85	8.60 ± 0.78	7.90 ± 0.99	0.001
Albumin (g/dL)	3.90 ± 0.63	3.94 ± 0.62	3.71 ± 0.63	0.006
Glucose (mg/dL)	155.25 ± 98.25	153.45 ± 100.41	165.54 ± 84.76	0.343
LDH (U)	523.36 ± 480.75	518.47 ± 492.08	553.15 ± 406.77	0.585
BMI (kg/m2)	23.85 ± 4.12	23.93 ± 4.19	23.42 ± 3.72	0.368
Hospital stay (d)	9.81 ± 7.15	9.21 ± 6.34	13.36 ± 10.11	0.001

Data expressed as mean ± SD. MAP: Mild acute pancreatitis; SAP: Severe acute pancreatitis; WBC: White blood cell; CRP: C-reactive protein; Hct: Hematocrit; BUN: Blood urea nitrogen; LDH: Lactate dehydrogenase; BMI: Body mass index, P value < 0.05.