AO	Airflow obstruction
BD	Bronchodilator
CI	Confidence interval
COPD	Chronic obstructive pulmonary disease
CRP	C-reactive protein
CVD	Cardiovascular disease
FEV1	Forced expiratory volume in one second
FVC	Forced vital capacity
GM	Geometric mean
h	hours
IL	Interleukin
IQR	Interquartile range
ppb	Parts per billion
NO2	Nitrogen dioxide
PM2.5	Particulate matter less than 2.5 µm in diameter
RPM	Revolutions per minute
TAHS	Tasmanian longitudinal health study
TNF-α	Tumor necrosis factor-α
TRAP	Traffic-related air pollution
WHO	World Health Organization