Figure. . . Treatment duration, by drug-resistance pattern, among reported tuberculosis case-patients who completed treatment, United States, 2006. Cases were among patients who were alive and initiated therapy at diagnosis and who had start and end therapy dates as well as results for initial drug susceptibility testing to isoniazid, rifampin, and ethambutol. Susceptibility testing was conducted on culture-positive Mycobacterium tuberculosis isolates from any specimen type.