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