Table 2.

Hypothetical delivery models.

Model 1	Once a person in a CARG initiates TPT, they leave the CARG model and are seen monthly at the clinic for the duration of TPT. They receive one month of TPT and ART at a time, with monthly clinical examinations. Once they complete the full course of TPT they return to the CARG model.
Model 2	Once a person in a CARG initiates TPT, they make monthly clinic visits for the first three months, and then return to the CARG for the remainder of the TPT course. Their fellow CARG members pick up three months’ worth of ART and TPT for them as usual, and their CARG leader monitors for adherence, side effects and symptoms of incident TB until they complete the full course of TPT.
Model 3	Once a person in a CARG initiates TPT, TPT is administered entirely within the CARG. In this model, the person on TPT is not seen in clinic after TPT initiation unless problems arise. They receive an initial three months of TPT and ART after which their fellow CARG members pick up three months’ worth of ART and TPT for them as usual, and their CARG leader monitors for adherence, side effects and symptoms of incident TB until they complete the full course of TPT.