The 2014 PIAAC U.S. Prison Study Restricted Use File (RUF) contains individual unit record data including responses to both the background questionnaire and the cognitive assessment from the data collection completed in 2014. Statistical disclosure control treatments were applied due to confidentiality concerns. In addition to the variables in the Prison Study PUF (NCES 2016-337REV), the RUF contains detailed versions of variables and additional data collected through U.S. specific questionnaire routing. The RUF can be accessed through a restricted use license agreement with the National Center for Education Statistics. For more details on the RUF, please refer to Appendix E of the U.S. PIAAC Technical Report 2012/2014 (NCES 2016-036REV).
