Table 4.

Risk factors of the development of acute renal impairment in severe acute respiratory syndrome (SARS) by univariate analysis

	Relative risk (99% CI)	P value
Use of inotropes	124.2 (19.01–811.4)	<0.001
Acute respiratory distress syndrome	46.60 (9.800–221.6)	<0.001
Systolic blood pressure	1.017 (0.997–1.038)	0.032
White blood cells	1.047 (0.943–1.164)	0.257
Lymphocyte count	0.717 (0.233–2.205)	0.446
Nadir white blood cells	1.115 (0.980–1.267)	0.029
Nadir lymphocyte count	0.039 (0.002–0.812)	0.006
Plasma albumin on admission	0.904 (0.842–0.971)	<0.001
Peak plasma creatine phosphokinase > 1500a	12.65 (3.039–52.64)	<0.001
Plasma alanine transferase on admission	1.005 (1.001–1.010)	0.004
Age	1.044 (1.019–1.069)	<0.001

^aPatients with creatine phosphokinase less than 1500 serve as the reference group.