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
B13BDAYS. (How long has it been since you stopped smoking?) [ENTER NUMBER OF DAYS]
Imputation and derivation
Imputation
B13BDAYS. (How long has it been since you stopped smoking?) [ENTER NUMBER OF DAYS]
Others
Security
B13BDAYS. (How long has it been since you stopped smoking?) [ENTER NUMBER OF DAYS]
