Air pollutants exposure and proximity to major road
The PM10 and NORegarding the proximity to major roads, geographers of the Ruhr University Bochum converted the places of residence of the getABI participants into Gauss-Krueger coordinates, and the distances to major roads were generated with the help of the "Functional Road Classes" from the StreetPro_EMEA program. Therein, all roads that fell under the three classes motorway, major road, and other major road (micodes 2001xxxx, 2002xxxx, and 2003xxxx, respectively) were considered together and referred to as major road in this work. A major road within a radius of ≤ 50 m to the residential address was considered an exposure to this potential risk factor.