Table 1

Overview of the studied populations and statistical methods in relation to exposures and outcomes in the SHEEP study in Stockholm 1992–1994

OutcomeAir pollution exposure
Long-termShort-term
Blood markersPopulation controls (n=1506)
Linear regression
Models adjusted for age and sex		Population controls (n=1506)
Linear regression
Models adjusted for age, sex, ambient temperature
Myocardial infarctionControls and non-fatal MI cases (n=2698)
Logistic regression (case–control design)
Models adjusted for age, sex, hospital catchment area		Non-fatal MI cases (n=1192)
Conditional logistic regression (case–crossover design)
Models adjusted for ambient temperature (+ age and sex by design)