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.
var_qstn_ivulnstr
In the VERY RARE case the respondent does not know the exact month, select DK. You should do your VERY best to make the respondent remember, however. A comment MUST be made in case the respondent really does not know, and a valid reason must be given in this case