An in-depth analysis of self-reported cycling injuries in single and multiparty bicycle crashes in Denmark

•Cyclist injury severity is analyzed using self-reporting crash data.•Separate multilevel logit models are developed for single and multiparty bicycle crashes.•Single bicycle crashes result in more serious injuries than multiparty bicycle crashes.•The separate models of single and multiparty crashes are favored to the overall model.•Different risk factors are associated with cyclist injury severity in single and multiparty crashes.