This Note describes the Year-at-Risk (YAR) file, a SAS (Statistical Analysis System) software system data file, that is the primary source of data for building, testing, and maintaining the models in the Air Force's Enlisted Force Management System. The YAR file contains longitudinal data on every airman who was on regular active duty in the Air Force any time between June 30, 1971, and June 30, 1987. This Note describes each of the variables on the YAR file and lists the possible data codes and their meanings. The Air Force maintains the YAR file and updates it annually with data on airmen who were in the Air Force during the preceding twelve months.
Murray, Michael, Daniel A. Relles, Marygail K. Brauner, Grace M. Carter, Leola Cutler, Debbie Drezner, and Warren Walker, What's on the Year-At-Risk File. Santa Monica, CA: RAND Corporation, 1989. https://www.rand.org/pubs/notes/N2744.html. Also available in print form.
Murray, Michael, Daniel A. Relles, Marygail K. Brauner, Grace M. Carter, Leola Cutler, Debbie Drezner, and Warren Walker, What's on the Year-At-Risk File, RAND Corporation, N-2744-AF, 1989. As of November 30, 2022: https://www.rand.org/pubs/notes/N2744.html