Table 4 Associations between cooking duration and indoor NO2 and peak hourly CO levels in homes with gas stoves.

From: Associations between residential fossil fuel combustion and indoor concentrations of nitrogen dioxide, carbon monoxide, and aldehydes in Canadian homes

Pollutant

Season

Factor

Percent change in pollutant concentrations and 95% confidence intervals

Edmonton

Halifax

Pooleda

NO2 (µg/m3)

Summer

Duration of gas stove use (per 10 min)

 

6 (−0.1 to 12)†

5 (0 to 11)*

Winter

Duration of gas stove use (per 10 min)

2 (0.9 to 4)**

5 (0.4 to 11)*

1 (0 to 2)*

Outdoor NO2 concentrations (per 10% increase)

3 (2 to 5)***

  

Peak hourly CO (ppm)

Winter

Duration of gas stove use (per 10 min)

  

2 (0.4 to 4)*

  1. Results are presented as the percent change and 95% confidence intervals in pollutant concentrations associated with per unit changes in continuous variables, evaluated using mixed models and general linear models. Statistical significance is denoted at p < 0.1, with specific levels indicated as †p < 0.1, *p < 0.05, **p < 0.01, ***p < 0.0001.
  2. aIn Regina, despite the lack of significant associations between cooking duration and both indoor NO2 and peak hourly CO levels in homes with gas stoves, these homes were still included in the pooled analysis.
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