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Study flowchart. Of the nine TB patients excluded for missing cost data, five could not provide sufficient income information, three were unable to provide transportation costs, and one was missing both types of data. Of the 23 reference patients (i.e., those without TB) excluded for missing cost data, 15 were unable to provide sufficient income information, seven were unable to provide transportation costs and 1 was missing both types of data. TB = tuberculosis.
