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.
MENSTIMFLAG (V227) is a flag variable that indicates the type of problem, if any, found in editing responses on the time since the respondent's last menstrual period. Cases without a problem are coded 0.
For time since last menstrual period, see TIMEMENSTRUATE (V215).