The PIAAC U.S. public use file contains individual unit record data including both responses to the background questionnaire and the cognitive assessment from the original U.S. PIAAC data collection completed in 2012. __ Connected to SDG indicator 4.6.1 - Percentage of population in a given age group achieving at least a fixed level of proficiency in functional (a) literacy and (b) numeracy skills, by sex __ Internet Archive URL: https://web.archive.org/web/2017*/https://nces.ed.gov/pubsearch/pubsinfo.asp?pubid=2014045rev