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Table 3 Adjusted odds ratio (OR)a for emergency department visits for respiratory causes among all patients, by season

From: Urban air pollution and emergency room admissions for respiratory symptoms: a case-crossover study in Palermo, Italy

 

All seasons

Season

  

Cold (October to March)

Warm (April to September)

Pollutants

OR

95% CI

OR

95% CI

OR

95% CI

PM 10

1.022

1.013-1.031

1.018

1.008-1.029

1.039

1.020-1.058

SO 2

1.044

1.003-1.086

0.983

0.908-1.064

1.068

1.014-1.126

CO b

1.023

1.001-1.047

0.991

0.965-1.017

1.128

1.074-1.184

NO 2

1.015

1.004-1.026

1.000

0.984-1.015

1.043

1.021-1.065

  1. a Odds ratios were calculated in relation to an increase of 10 μg/m3 of selected air pollutants and were adjusted for meteo-climatic parameters, and influenza epidemic peaks (see Methods - Statistical analysis).
  2. b For an increase of 1 mg/m3.
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Environmental Health

ISSN: 1476-069X