Table 4. Multivariate analysis on risk factors associated with 30-day mortality^a.

Risk factors	Adjusted OR (95% CI)	p value
Significant coexisting conditions	13.4 (3.1 to 58.2)	0.001
Shortness of breath on admission	3.9 (1.2 to 12.3)	0.020
Total leukocyte count >4.0 x109/L at admission	6.94 (1.18 to 41.6)	0.033
Positive RT-PCR on NPA	6.4 (1.1 to 38.0)	0.038
Use of pulsing doses of steroid	26.0 (4.4 to 154.8)	0.001

^aOR, odds ratio; CI, confidence interval; RT-PCR, reverse transcription polymerase chain reaction; NPA, nasopharyngeal aspirates.