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Variable Information
LabelAre you blind or do you have serious difficulty seeing, even when wearing glasses?
SectionDisability Status
Data Typeinteger
RADx Variable CategoryRADx Core Variable
Description
The nih_blind data element records responses to the prompt, or a congruently meaning prompt, "Are you blind or do you have serious difficulty seeing, even when wearing glasses?". Equivalent prompts are: - "Are you blind, or do you have serious difficulty seeing, even when wearing glasses?" RADx-UP - "Are you blind or do you have serious difficulty seeing, even when wearing glasses?" RADx-rad - "Are you blind or do you have serious difficulty seeing, even when wearing glasses?" RADx-Tech - "Are you blind or do you have serious difficulty seeing, even when wearing glasses?" RADx-DHT The values for this data element are integers that come from a list of 5 permissible integer values. The nih_blind data element is the result of the harmonization of other RADx program data elements: disability_blind RADx-UP; blind RADx-rad; vision RADx-Tech; dht_blind RADx-DHT Note that the meaning of the value 97 is context specific and depends on the subset of permissible value used by a specific study (not all studies presented the full set of permissible values documented here for this data element). Therefore, the meaning of the value 97 in an individual data record MUST be determined by referring to the original data dictionary for the non-harmonized data in that study.
Keywordsblindness (disorder); vision impairment; vision loss; visual impairment
Term
BioPortal Logo [MONDO:0001941] blindness (disorder)
From
RADx-DHT dht_blind
RADx-Tech vision
RADx-UP disability_blind_2
RADx-rad blind
Permissible Values
Specimens Table
Value
Label
0
No
1
Yes
97
Other
98
Don’t know
99
Prefer not to answer
List of Studies Using Variable