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Table 1 Number and characteristics of asthma patients included in study

From: Asthma exacerbations and traffic: examining relationships using link-based traffic metrics and a comprehensive patient database

Characteristic

Number

Percent

Total Cases

19,915

100

Gender

 Males

8785

44

 Females

11,130

56

Age (years)

 0–4

2853

14

 5–9

2272

11

 10–19

3953

20

 20–64

9436

47

  ≥ 65

1401

7

Poverty Index (%)

 0

1179

6

 1–10

14,494

72

 11–20

3781

19

 20–30

144

1

  > 30

396

2

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Environmental Health

ISSN: 1476-069X