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
I would now like to ask you some questions about smoking the shisha water pipe. How many years ago did you first start s
Imputation and derivation
Imputation
I would now like to ask you some questions about smoking the shisha water pipe. How many years ago did you first start s
Others
Security
I would now like to ask you some questions about smoking the shisha water pipe. How many years ago did you first start s