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Table 1 Characteristics of the cases (n = 4024)

From: Ambient air pollution is associated with pediatric pneumonia: a time-stratified case–crossover study in an urban area

Characteristic

Number

%

Age (mean ± SD)

5.0 ± 3.6

 

Male sex

2144

53.3

Respiratory disease

305

7.6

Asthma

250

6.2

Cerebral palsy

124

3.1

Epilepsy

110

2.7

Warm season

2192

54.5

Warm days (≥26.5 °C)

1762

43.8

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Environmental Health

ISSN: 1476-069X