Fig. 1: Percentage of patients with TB and HIV infection in British Columbia who are aboriginal, women, intravenous drug users and homosexual men. White bars represent patients identified from 1984 to 1990; black bars, those identified from 1990 to 1994. p <0.01 for differences between the two time periods for all groups shown. Patients for whom risk factors were unknown were excluded from the intravenous drug users.