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Codes and Frequencies



An 'X' indicates the category is available for that sample

0NIUXXXXX
1DaysXXXXX
2WeeksXXXXX
3MonthsXXXX·
4Years···X·
5NeverXXXXX
7Unknown-refusedXXXXX
8Unknown-not ascertainedXXXXX
9Unknown-don't knowXXXXX