In this replication file, we include only one file [decomp_youthcrime_demographicresearch.do]. This file inputs all aggregated data necessary to construct Figures 1-4 and includes the code to perform the decomposition in Table 1. Individual-level data could not be included in this replicability package because Statistics Denmark does not allow individual-level data to be released. But, as was already mentioned, the aggregated data are part of the do-file and should suffice for researchers to check our calculations and the progression of our analyses. Access to de-identified individual data may be obtained through Statistics Denmark following a clearance process. For information on the process and the accessibility of Danish registry data, see http://www.dst.dk/ext/645846915/0/forskning/Access-to-micro-data-at-Statistics-Denmark_2014--pdf. For general information about access to Danish registry data through Statistics Denmark, including information on how to apply for data access, see http://www.dst.dk/en/TilSalg/Forskningsservice.