Your privacy, your choice

We use essential cookies to make sure the site can function. We also use optional cookies for advertising, personalisation of content, usage analysis, and social media.

By accepting optional cookies, you consent to the processing of your personal data - including transfers to third parties. Some third parties are outside of the European Economic Area, with varying standards of data protection.

See our privacy policy for more information on the use of your personal data.

for further information and to change your choices.
Skip to main content
Fig. 2 | Environmental Health

Fig. 2

From: Impact of short-term exposure to air pollution on natural mortality and vulnerable populations: a multi-city case-crossover analysis in Belgium

Fig. 2

Percentage changes for all-causes mortality associated with air pollutants increase by subgroups of population BC: black carbon; CVD: cardiovascular diseases; COPD: chronic obstructive pulmonary diseases Red: significant effect modification (p<0.05); Dashed red: suggestion of effect modification (p between 0.05 and 0.20) [25]. P-values for effect modification were assessed by Z-tests, which examined the statistical significance of the effect differences between different subgroups; for variables containing more than two categories, p was calculated by comparing the estimate of the specified category with the first category [26] Percentage changes were assessed on different lag days: lag 0 for O3, lag 7 for PM2.5, PM10, NO2 and BC

Back to article page

Environmental Health

ISSN: 1476-069X