preferred_name: Holding food in mouth &or cheeks or residual food in mouth after meals in last 7D
preferred_name_lc: holding food in mouth &or cheeks or residual food in mouth after meals in last 7d
label: Holding food in mouth &or cheeks or residual food in mouth after meals in last 7D
label_lc: holding food in mouth &or cheeks or residual food in mouth after meals in last 7d