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VITASELNMO
Duration took selenium, past 12 months: Months

Codes and Frequencies



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

00NIUX
011 monthX
022 monthsX
033 monthsX
044 monthsX
055 monthsX
066 monthsX
077 monthsX
088 monthsX
099 monthsX
1010 monthsX
1111 monthsX
1212 monthsX
97Unknown-refused·
98Unknown-not ascertained·
99Unknown-don't knowX