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
EC8BYEARS. (How long has it been since you stopped using electronic cigarettes?) [ENTER NUMBER OF YEARS]
Imputation and derivation
Imputation
EC8BYEARS. (How long has it been since you stopped using electronic cigarettes?) [ENTER NUMBER OF YEARS]
Others
Security
EC8BYEARS. (How long has it been since you stopped using electronic cigarettes?) [ENTER NUMBER OF YEARS]