The objective of the study was to investigate whether exposure to aircraft noise increases the risk of hospitalization for cardiovascular diseases in older people (≥65 years) residing near airports. Multi-airportretrospective study of approximately 6 million older people residing near airports in the United States. The authors superimposed contours of aircraft noise levels (in decibels, dB)for 89 airports for 2009 provided by the US Federal Aviation Administration on census block resolution population data to construct two exposure metrics applicable to zip code resolution health insurance data: population weighted noise within each zip code, and 90th centile of noise among populated census blocks within each zip code