preferred_name: Used cocaine, crack, or methamphetamine at least once a week in past 3 months
preferred_name_lc: used cocaine, crack, or methamphetamine at least once a week in past 3 months
label: Used cocaine, crack, or methamphetamine at least once a week in past 3 months
label_lc: used cocaine, crack, or methamphetamine at least once a week in past 3 months