Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Description
Source of information
Say backwards 6-9-1-6-3-2-5-8. Did respondent answer correctly?
Imputation and derivation
Imputation
Say backwards 6-9-1-6-3-2-5-8. Did respondent answer correctly?
Others
Security
Say backwards 6-9-1-6-3-2-5-8. Did respondent answer correctly?