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Codes and Frequencies



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

00NIUXXXXXXXXXXXXXXXXXXX··
10NoXXXXXXXXXXXXXXXXXXXXX
20YesXXXXXXXXXXXXXXX······
21Yes, indicated by response to direct survey question···············XXXXXX
22Yes, indicated by other source···············XXXXXX