Table 1.

Subject Demographic and Clinical Characteristics by 30-Day Mortality*

Variable	30-Day Mortality
	Alive (n= 715)	Dead (n= 72)	p-valzue
Age, years +/- standard deviation	60.2+/-16.4	62.9 +/-16.4	0.09
Men	561 (79)	60 (83)	0.3
Nursing home resident	41 (6)	13 (18)	<0.001
Admitted through emergency department	598 (84)	58 (81)	0.5
Admitted to intensive care within 24 hours	118 (17)	36 (50)	<0.001
Preexisting Comorbid Conditions
Congestive heart failure	105 (15)	18 (25)	0.02
Chronic pulmonary disease	195 (27)	23 (31)	0.4
History of stroke	93 (13)	12 (17)	0.4
Chronic liver disease	83 (12)	11 (15)	0.4
History of malignancy	58 (8)	20 (28)	<0.001
Renal insufficiency	74 (10)	13 (18)	0.05
History, Physical, Laboratory, and Radiographic Data
Altered mental status	68(10)	17(24)	<0.001
Respiratory rate > 30 per minute	71 (10)	11 (15)	0.2
Systolic blood pressure < 90 mmHg	16 (2)	5 (7)	0.02
Heart rate > 125 per minute	86 (12)	19 (26)	0.001
Temperature < 95° or > 104°F	19 (3)	2 (3)	0.9
Arterial pH < 7.35	37 (5)	12 (17)	<0.001
Arterial oxygenation saturation < 90%	149 (21)	27 (38)	0.001
Hematocrit < 30%	64 (9)	8 (11)	0.5
Serum blood urea nitrogen > 30 mg/dL	135 (19)	33 (46)	<0.001
Serum glucose > 250 mg/dL	71 (10)	5 (7)	0.4
Serum sodium < 130 meq/L	98 (14)	18 (25)	0.01
Pleural effusion on chest radiograph	160 (11)	29 (35)	0.001
Pneumonia Severity Index
Class I-III	393 (54)	16 (22)
Class IV	240 (34)	26 (36)
Class V	82 (12)	30 (42)	<0.001
Processes of Care
Initial antibiotics within 4 hours	201 (28)	22 (31)	0.7
Initial antibiotics within 8 hours	358 (50)	36 (50)	1.0
Blood cultures prior to antibiotics	540 (76)	55 (76)	0.9
Oxygenation assessed ≤ 24 hours	538 (75)	65 (90)	0.004
Guideline-concordant antibiotics used	574 (80)	51 (71)	0.05
Outpatient Medications
Statin	105 (15)	5 (7)	0.07

* Data are presented as number (%) or mean +/-standard deviation