Air pollution

Demography

Ecology

Random effects model

Biology

Pollution

Aerodynamic diameter

Environmental health

Organic chemistry

Particulates

Toxicology

Meta-analysis

Internal medicine

Sociology

Environmental science

Air pollutants

Confidence interval

Medicine

Chemistry

Particulate pollution

Mortality rate

New England Journal of Medicine

The systematic evaluation of the results of time-series studies of air pollution is challenged by differences in model specification and publication bias.

Ambient Particulate Air Pollution and Daily Mortality in 652 Cities