Codes and Frequencies
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Description
For sample adults who were ever told they have macular degeneration (MACDEGENEV), this variable identifies persons who lost any vision because of the degeneration. Please see the Universe tab for changes in MACDEGVLOS universe over time.
[show more]The Field Representative's Manual defined macular degeneration as "when the macula, which is a small area in the eye where vision is sharpest, deteriorates. Central vision declines, making it difficult to do close work such as reading or recognizing faces. The person may still have side vision." This definition was not routinely shared with persons.
Comparability
In addition to changes in universe, the NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.
Universe
- 2008; 2016; 2017: Sample adults age 18+ who were ever told they have macular degeneration.
- 2023: Sample adults age 45+ who were ever told they have macular degeneration.
Availability
- 2008, 2016-2017, 2023
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Weights
- 2008, 2016-2017, 2023 : SAMPWEIGHT