Baseline predictors of in-hospital mortality among patients with chronic kidney disease admitted to the emergency department

Table 2 Baseline laboratory parameters predicting mortality on univariate analysis, n (%)/mean ± SD/median (25^th-75^th percentiles)

Parameter	Total (n = 354)	Survivor (n = 251)	Died (n = 103)	P value
Random plasma glucose (mmol/L)	6.9 (5.3-10.0)	6.6 (5.4-9.3)	7.6 (5.1-12.8)	0.133
Hyperglycemia	73 (20.6)	39 (15.5)	34 (33.0)	< 0.001
Hypoglycemia	40 (11.3)	24 (9.6)	16 (15.5)	0.107
Serum sodium (mmol/L)	134.1 ± 7.8	133.4 ± 7.3	135.6 ± 8.8	0.015
Hyponatremia	166 (46.9)	123 (49.0)	43 (41.7)	0.214
Serum potassium (mmol/L)	5.0 ± 1.2	5.1 ± 1.1	5.0 ± 1.3	0.955
Severe hyperkalemia	42 (11.9)	31 (12.4)	11 (10.7)	0.659
Blood urea (mmol/L)	57.3 (37.5-79.8)	56.8 (37.8-81.0)	58.6 (36.8-79.3)	0.949
Serum creatinine (μmol/L)	690 (468-963)	725 (530-1016)	530 (416-805)	< 0.001
Serum bilirubin (μmol/L)	8.6 (6.8-13.7)	8.6 (6.8-12.0)	10.3 (5.1-15.4)	0.149
Aspartate transaminase (U/L)	27 (18-54)	25 (17-49)	35 (21-72)	0.003
Alanine transaminase (U/L)	22 (11-39)	22 (11-39)	21 (13.5-43)	0.454
Alkaline phosphatase (U/L)	133 (97.5-211.25)	130 (94-187)	165 (113.5-272)	0.093
Total serum protein (g/L)	62.9 ± 9.2	63.9 ± 9.0	60.6 ± 9.4	0.004
Serum albumin (g/L)	29.1 ± 7.0	29.9 ± 6.6	27.1 ± 7.5	0.001
Serum calcium (mmol/L)	2.06 ± 0.31	2.05 ± 0.31	2.08 ± 0.30	0.540
Serum phosphorus (mmol/L)	1.81 ± 0.68	1.80 ± 0.69	1.80 ± 0.64	0.724
Serum magnesium (mmol/L)	1.06 ± 0.21	1.06 ± 0.22	1.04 ± 0.18	0.582
Hemoglobin (g/L)	75.6 ± 22.2	73.4 ± 21.8	81.1 ± 22.4	0.003
Platelets (per μL)	166000 (103000-244000)	166000 (108000-248000)	147000 (78000-227000)	0.864
Total leukocyte count (per μL)	11400 (7600-17525)	10900 (7400-16300)	13200 (8800-20000)	0.023
Leukocytosis	184 (52.0)	123 (49.0)	61 (59.2)	0.080
Neutrophils (%)	84 (76-88)	82 (74-88)	86 (78.5-89.5)	0.046
Lymphocytes (%)	8 (5-13)	8 (5-13)	7 (4-12.75)	0.977
Neutrophil lymphocyte ratio	10.9 (5.75-18.0)	10.25 (5.5-17.75)	12.4 (5.9-22.1)	0.220