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U.S. Household Study Data Collection

Cycle U.S.
Round
Year Population Sample
Size
Purpose Related Publications
1 1 2012 Ages 16-65 5,000 Assess and compare the basic skills and broad range of competencies of adults in the United States
2 2014 Ages 16-74 3,660 Supplement the Round 1 sample by oversampling young adults and unemployed adults, and expanding the sample to include older adults (ages 66-74)
3 2017 Ages 16-74 3,660 Provide a second point in time for comparison to 2012/2014 data, and develop state and county estimates when combined with the 2012/2014 studies.

U.S. PIAAC Round 1 Data Collection (2012, Main Study)

Household data collection:

The first round of data collection in the United States (officially known as the U.S. PIAAC Main Study) was conducted from August 2011 through April 2012 with a nationally representative household sample of 5,000 adults between the ages of 16 and 65.

Publications based on round 1 of U.S. data collection:

U.S. PIAAC Round 2 Data Collection (2014, National Supplement)

Household data collection:

The second round of U.S. data collection (officially known as the National Supplement to the Main Study) included a household survey, which was conducted from August 2013 through April 2014. It was administered to a sample of 3,660 U.S. adults in households in order to (a) enhance the U.S. PIAAC dataset by oversampling young adults (ages 16-34) and unemployed adults, and (b) expand the sample to include older adults (ages 66-74). The combined 2012/2014 U.S. PIAAC data, with an expanded national sample of approximately 8,700 adults living in U.S. households, support more accurate and reliable national estimates for these subgroups and, in the case of older adults, estimates for a new group not represented in the first round of PIAAC.

In addition to the household data collection, the National Supplement also included the U.S. PIAAC Prison Study. For more information, please visit U.S. Prison Study Data Collection.

Publications based on round 2 of U.S. data collection:

U.S. PIAAC Round 3 Data Collection (2017)

Household data collection:

The third round of U.S. data collection was conducted from March 2017 through September 2017 with a nationally representative household sample of 3,660 adults between the ages of 16 and 74. The results from the 2017 data collection provide a second point in time for comparisons to the 2012/2014 results. In addition, the combined 2017 and 2012/2014 data supported the calculation of U.S. state and county indirect estimates of literacy and numeracy.

Publications based on round 3 of U.S. data collection: