U.S. Program for the International Assessment of Adult Competencies (PIAAC) 2012/2014: Main Study and National Supplement Technical Report (NCES-2016-036REV) is a technical manual that describes how the data were collected and processed as well as how to use the data files to conduct statistical analyses. Information is presented on meeting PIAAC consortium requirements, sample design, listing materials and procedures, data collection, reducing the risk of data disclosure, the need for conducting a nonresponse bias analysis, weighting and variance estimation, data preparation and processing, as well as data quality, IRT analyses, and population modeling. The appendices of the Technical Report include basic analysis tables, extended analysis tables; PIAAC 2012/2014 weighted item response rates, NRBA technical notes, and data user guidance.
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