Table 1

Univariate characteristics of patients with community-acquired pneumonia by race


Number and % of Patients





White

Black


Variable
n = 720*
%
n = 240
%
p-value

Age




1.00
<65
132
18.3
44
18.3

65–74
189
26.3
63
26.3

75–84
255
35.4
85
35.4

>84
144
20.0
48
20.0

Gender





Male
312
43.3
104
43.3

Female
408
56.6
136
56.7

Length of Stay





1–2 days
63
8.8
23
9.6
0.663
3–6 days
375
52.2
116
48.3

7–13 days
220
30.6
76
31.7

>13 days
60
8.4
25
10.4

Nursing home resident
148
21.0
51
22.2
0.774
Pneumonia Severity Index




0.001
I-III
280
39.0
68
28.8

IV
296
41.2
97
41.1

V
142
19.8
71
30.1

Comorbid conditions





Malignancy
57
8.0
28
12.2
0.073
Chronic renal disease
75
10.6
58
25.2
0.000
Liver disease
9
1.3
5
2.2
0.039
Congestive heart failure
199
20.0
80
34.9
0.057
History of stroke
105
14.9
55
23.9
0.002

*The average frequency over the 10 random samples

Mortensen et al. BMC Health Services Research 2004 4:20   doi:10.1186/1472-6963-4-20