Derivation
variable: chtrt_s [treatment change to streptomycin in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_h [treatment change to isoniazid in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_r [treatment change to rifampicin in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_z [treatment change to pyrazinamide in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_t [treatment change to thiacetazone in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_e [treatment change to ethambutol in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_f [treatment change to fatol in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)
variable: chtrt_rh [treatment change to rinfinah in intensive phase] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2)