preferred_name: Current smoker (e.g., cigarette, cigar, pipe, e-cigarette or marijuana)
preferred_name_lc: current smoker (e.g., cigarette, cigar, pipe, e-cigarette or marijuana)
label: Current smoker (e.g., cigarette, cigar, pipe, e-cigarette or marijuana)
label_lc: current smoker (e.g., cigarette, cigar, pipe, e-cigarette or marijuana)