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
31f. since coming to the united states, in how many months have one or more pers
Imputation and derivation
Imputation
31f. since coming to the united states, in how many months have one or more pers
Others
Security
31f. since coming to the united states, in how many months have one or more pers