Fig. 1

Simplified schematic of decision analysis model structure. * At the end of each cycle, individuals either continue to have or stop having any of the four TB risk factors (tobacco use, heavy drinking, food insecurity, overcrowded housing). Whether they continue or stop depends on how the prevalence of the factors is changing. For example, if an individual in Stratum 1 (i.e. with all four TB risk factors) is no longer in overcrowded housing by the end of one cycle, they move to Stratum 2 (i.e. having all TB risk factors except overcrowding) at the beginning of the following cycle