Table 1 Baseline Characteristics of Pneumonia Patients According to Neighbourhood Median Income

1

2

3

4

5

N = 15057

N = 14655

N = 12268

N = 10310

N = 8167

Neighborhood Income ($)

0.0039

Median

16433

18572

20256

22982

26786

Interquartile Range

15408–16988

18056–19201

20043–21020

22186–24258

25899–29710

Mean Age (yr)

78.03+/-

7.65

77.94+/-

7.55

78.07+/-

7.59

78.29+/-

7.58

78.51+/-

7.72

0.0370

Female sex (%)

47.23

48.29

47.21

49.20

49.44

0.0007

Comorbid conditions (%)

Chronic Lung Disease

6.91

7.55

6.33

7.59

6.61

0.5382

Congestive Heart Failure

4.30

4.79

4.73

4.76

3.87

0.4348

Ischemic Heart Disease

11.60

12.90

14.11

14.31

13.22

<0.0001

Peripheral Vascular Disease

1.34

1.30

1.36

1.26

1.04

0.1003

Chronic Renal Failure

0.90

0.87

1.04

1.09

0.73

0.9210

Diabetes

6.97

8.02

7.44

7.38

6.09

0.0199

Cancer

2.89

3.43

3.73

3.77

4.04

<0.0001

Charlson score > 1 (%)

28.76

28.98

30.91

31.74

31.50

<0.0001

Specialty of Attending Physician (%):

<0.0001

General Practice

54.78

62.27

56.26

43.96

42.07

Internal Medicine

26.69

23.82

26.18

34.24

35.14

Respirology

6.16

5.43

5.98

7.19

8.90

Other

12.37

8.47

11.57

14.62

13.89

Teaching Hospital (%)

17.63

11.31

17.12

23.66

23.58

<0.0001