Table 5

Factors warranting study for possible association with susceptibility to adverse health effects of air pollution

Category Examples
GeneticFibrinogen polymorphisms
Previous exposureTobacco smoking
Classic risk factorsPlasma fibrinogen, LDL cholesterol
Pre-existing symptomsAngina (WHO), chronic bronchitis (MRC)
Impaired functionReduced spirometric values
Confirmed diseaseMyocardial infarction, bronchial asthma
Previous emergency admissionIschaemic heart disease, obstructive lung disease
Other factorsAge, socioeconomic status