Characteristics of patients with drug susceptible, PZA resistant, and MDR mycobacterial infection in San Francisco between 1991 and 2011.

Abbreviations: HIV, Human Immunodeficiency Virus; AFB, acid-fast bacilli; Ref, referent group.aOne of the susceptible cases was Native-American.bHousing status was not known for one of the patients.cX-ray data was not available for one of the susceptible controls and one of the PZA-MDR cases.dThree of the susceptible cases died upon diagnosis and one moved. One of the PZA monoresistant cases died before treatment. One of the MDR cases was lost to follow up. Treatment regimens were not available for 5 of the PZA monoresistant, 7 of the MDR, and 2 of the PZA-MDR cases. These cases were excluded from treatment outcomes analysis.ep values for multinomial logistical regression analysis are not recorded for categories with zero cases.