Codes and Frequencies
Respondents reported how much difficulty they had remembering or concentrating.
In 2010, this item was collected for sample adults who completed the Quality of Life supplement (administered to approximately a quarter of sample adults). In 2011-2017, this item was collected for sample adults who completed the Adult Functioning and Disability supplement (administered to a subset of sample adults). Beginning in 2018, this item was included on the sample adult questionnaire.
Changes in survey design (e.g., quarters in which the supplement was collected) may affect raw frequencies, but do not affect comparability of the variable. Beginning in 2018, this item was included on the sample adult questionnaire. As always, data users should use the prescribed IPUMS NHIS weights.
- 2010: One quarter of sample adults, included in quality of life supplement (and excluded from family disability supplement).
- 2011-2017: Sample adults 18+ who were selected to receive the family disability questions (FDB).
- 2018: Sample adults aged 18 and older.