Table 5.

Univariate analysis of prognostic factors: categorical variables

Factor	Nonsurvivors, 33	Survivors, 99	OR	95% CI	P
PSI class ≥IV	30/72 (71.7)	3/60 (5)	13.6	3.88–47.46	<0.001
Heart disease comorbidities	11/27 (40.7)	22/83 (21)	2.6	1.05–6.3	0.03
Chronic obstructive pulmonary disease	18/51 (35.3)	15/66 (18.5)	2.4	1.07–5.35	0.03
Diabetes mellitus	9/21 (42.9)	24/111 (21.6)	2.7	1.02–7.2	0.039
Bilateral pneumonia	20/52 (38.5)	13/80 (16.3)	3.2	1.42–7.28	0.004
Multilobar pneumonia	23/64 (35.9)	10/68 (14.7)	3.3	1.4–7.56	0.005
Septic shock at admission	14/35 (40)	19/97 (19.6)	2.7	1.2–6.35	0.017
ALI/ARDS at admission	14/30 (46.7)	19/102 (18.6)	3.8	1.6–9.15	0.002
MOF at admission	14/19 (73.7)	19/113 (16.8)	13.8	4.5–43.1	<0.001
MV required at admission	30/62 (48.4)	3/70 (4.3)	20.9	5.9–73.7	<0.001

Data are presented as number (%)

OR odds ratio, CI confidence interval, PSI pneumonia severity index, ALI acute lung injury, ARDS acute respiratory distress syndrome, MOF multiple organ failure, MV mechanical ventilation