A "CleanRecode" program exists for each subset of physical activity questions. These are: CleanRecode P1-P3, CleanRecode P4-P6, CleanRecode P7-P9, CleanRecode P10-P12, CleanRecode P13-P15, and CleanRecode P16. The first 5 of these programs are identical with the only exception being that the question codes are changed.