title: Contribution of exposure, risk of crash and fatality to explain age- and sex-related differences in traffic-related cyclist mortality rates.
abstract: This study was designed to quantify the percent contribution of exposure, risk of collision and fatality rate to the association of age and sex with the mortality rates among cyclists in Spain, and to track the changes in these contributions with time. Data were analyzed for 50,042 cyclists involved in road crashes in Spain from 1993 to 2011, and also for a subset of 13,119 non-infractor cyclists involved in collisions with a vehicle whose driver committed an infraction (used as a proxy sample of all cyclists on the road). We used decomposition and quasi-induced exposure methods to obtain the percent contributions of these three components to the mortality rate ratios for each age and sex group compared to males aged 25-34 years. Death rates increased with age, and the main component of this increase was fatality (around 70%). Among younger cyclists, however, the main component of increased death rates was risk of a collision. Males had higher death rates than females in every age group: this rate increased from 6.4 in the 5-14 year old group to 18.8 in the 65-79 year old group. Exposure, the main component of this increase, ranged between 70% and 90% in all age categories, although the fatality component also contributed to this increase. The contributions of exposure, risk of crash and fatality to cyclist death rates were strongly associated with age and sex. Young male cyclists were a high-risk group because all three components tended to increase their mortality rate.
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain; Doctoral Program in Clinical Medicine and Public Health, University of Granada, Spain. Electronic address: virmruiz@ugr.es.
authors: Virginia
authors: V
authors: Martínez-Ruiz
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain; Centros de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain.
authors: Eladio
authors: E
authors: Jiménez-Mejías
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain; Centros de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain.
authors: Carmen
authors: C
authors: Amezcua-Prieto
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain; Centros de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain.
authors: Rocío
authors: R
authors: Olmedo-Requena
authors: Centros de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain; Department of Biostatistics, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain.
authors: Juan de Dios
authors: Jde D
authors: Luna-del-Castillo
authors: Department of Preventive Medicine and Public Health, School of Medicine, University of Granada, Avenida de Madrid 11, 18012 Granada, Spain; Centros de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain.
authors: Pablo
authors: P
authors: Lardelli-Claret
mesh_terms: D000063:Accidents, Traffic / Q000401:mortality*; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001642:Bicycling / Q000293:injuries* / Q000706:statistics & numerical data*; D002423:Cause of Death; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment / Q000706:statistics & numerical data*; D012737:Sex Factors; D013030:Spain; D014947:Wounds and Injuries / Q000401:mortality*; D055815:Young Adult
keywords: Cyclists; Exposure; Fatality; Mortality; Risk