Alphabetic country code to identify the survey from which the data were collected. The code
is based on an international standard code. This variable is 3 characters in length, with the
third character indicating the format of the recode file used for this survey. For all surveys in MEASURE DHS following this standard, this code will be 5. For example: DR5 is the Dominican Republic, HT5 is Haiti and KH5 is Cambodia.