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. Author manuscript; available in PMC: 2009 Feb 11.
Published in final edited form as: Am J Trop Med Hyg. 2008 Dec;79(6):911–914.

TABLE 2.

Multivariate analysis of demographic, clinical, and laboratory variables

Variables Odds ratio 95% confidence interval P value
Age > 40 years 2.2 1.1–4.3 0.03
Pulmonary involvement 6.0 3.0–12.0 < 0.00001
Oliguria 3.0 1.2–9.0 0.01
Platelets < 70,000 2.2 1.2–4.7 0.01
Creatinine > 3.0 mg/dL 2.3 1.1–5.3 0.03