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Table 1 Mean daily outcome counts by visit type, outcome, and selected characteristics, St. Louis, Missouri, 1/1/2001-6/27/2007

From: Comparison of emergency department and hospital admissions data for air pollution time-series studies

Outcome

ICD-9 codes

Subgroup

ED Visits

All Hospital Admissions

Non-Elective Hospital Admissions

Hospital Admissions through ED

Mean Daily Count

Mean Daily Count

ED/HA ratio

Mean Daily Count

ED/HA ratio

Mean Daily Count

ED/HA ratio

All Diagnoses

All

Overall

2410.3

844.1

2.86

591.7

4.07

432.3

5.57

Age 0-1

146.49

94.06

1.56

91.48

1.60

10.38

14.11

Age 2-18

519.02

42.66

12.17

34.42

15.08

25.55

20.32

Age 19-64

1355.51

416.50

3.25

257.47

5.26

209.40

6.47

Age ≥65

389.22

290.88

1.34

208.27

1.87

187.02

2.08

Poverty area zip code

478.67

137.57

3.48

99.62

4.80

82.34

5.81

Non-Poverty area zip code

1925.22

704.59

2.73

490.76

3.92

349.31

5.51

Respiratory Outcomes

RD

460-465, 466.0, 466.1, 466.11, 466.19, 477, 480–486, 491, 492, 493, 496, 786.07

Overall

259.6

47.6

5.46

41.5

6.25

39.3

6.61

Age 0-1

39.8

4.3

9.23

3.8

10.43

3.5

11.33

Age 2-18

77.7

5.4

14.33

4.9

15.77

4.5

17.31

Age 19-64

113.3

16.1

7.05

13.7

8.29

12.9

8.81

Age ≥65

28.8

21.8

1.32

19.1

1.51

18.4

1.56

Poverty area zip code

55.21

9.26

5.96

7.92

6.97

8.01

6.89

Non-Poverty area zip code

203.49

38.23

5.32

33.56

6.06

31.19

6.52

Asthma/ Wheeze

493, 786.07

Overall

46.9

8.7

5.40

7.8

6.02

7.4

6.31

Age 0-1

5.2

0.8

6.75

0.7

7.41

0.7

7.82

Age 2-18

21.1

3.0

7.04

2.8

7.43

2.7

7.78

Age 19-64

18.7

3.8

4.96

3.3

5.76

3.1

6.00

Age ≥65

1.9

1.1

1.64

1.0

1.87

0.9

1.99

Poverty area zip code

15.57

2.75

5.65

2.49

6.24

2.54

6.13

Non-Poverty area zip code

31.20

5.91

5.28

5.28

5.91

4.88

6.40

Pneumonia

480-486

Overall

41.4

25.2

1.64

21.9

1.89

20.9

1.98

Age 0-1

4.7

1.2

3.87

1.1

4.47

1.0

4.80

Age 2-18

8.2

1.9

4.31

1.6

5.10

1.4

5.89

Age 19-64

14.0

7.9

1.76

6.8

2.07

6.4

2.19

Age ≥65

14.5

14.1

1.03

12.5

1.16

12.1

1.19

Poverty area zip code

7.03

4.10

1.72

3.43

2.05

3.48

2.02

Non-Poverty area zip code

34.32

21.06

1.63

18.49

1.86

17.39

1.97

Cardiovascular Outcomes

CVD

410-414, 427, 428, 433–437, 440, 443–445, 451-453

Overall

88.8

105.0

0.85

74.3

1.19

65.5

1.36

Age 0-1

0.2

0.1

2.07

0.1

2.65

0.1

3.25

Age 2-18

0.4

0.2

2.68

0.1

3.59

0.1

4.60

Age 19-64

34.1

38.1

0.90

25.9

1.32

22.4

1.53

Age ≥65

54.0

66.7

0.81

48.2

1.12

42.9

1.26

Poverty area zip code

14.65

15.47

0.95

11.42

1.28

10.81

1.36

Non-Poverty area zip code

73.96

89.40

0.83

62.78

1.18

54.56

1.36

Dysrhythmia

427

Overall

18.3

14.1

1.30

10.6

1.73

9.4

1.95

Age 0-1

0.1

0.0

3.63

0.0

4.14

0.0

4.92

Age 2-18

0.3

0.1

4.06

0.1

6.05

0.0

7.47

Age 19-64

7.8

4.6

1.71

3.4

2.28

3.0

2.56

Age ≥65

10.1

9.4

1.07

7.1

1.42

6.3

1.60

Poverty area zip code

2.72

1.73

1.57

1.32

2.06

1.26

2.17

Non-Poverty area zip code

15.58

12.36

1.26

9.29

1.68

8.12

1.92

CHF

428

Overall

22.4

24.2

0.92

20.1

1.11

18.7

1.20

Age 0-1

0.0

0.0

0.75

0.0

1.06

0.0

1.33

Age 2-18

0.0

0.0

0.80

0.0

1.02

0.0

1.96

Age 19-64

6.5

6.8

0.96

5.4

1.20

5.0

1.29

Age ≥65

15.8

17.4

0.91

14.6

1.08

13.6

1.16

Poverty area zip code

5.15

5.17

1.00

4.20

1.23

4.15

1.24

Non-Poverty area zip code

17.20

19.04

0.90

15.91

1.08

14.54

1.18

  1. RD respiratory disease group, CVD cardiovascular disease group, CHF congestive heart failure, ED emergency department, HA hospital admission, ICD-9 international classification of diseases, 9th Revision, clinical modification.