Demographic and clinical characteristics of HIV co-infected TB patients according to the date of diagnosis of HIV relative to the date of diagnosis of TB*.

abbreviations: CBO Canadian-born 'other'; CBA Canadian-born Aboriginal; FBO foreign-born 'other'; FBSSA foreign-born sub-Saharan African; IDU injection drug use; HSS heterosexual sex.*The date of diagnosis of TB is defined as the start date of treatment; see text for definition of “known” vs. “new” HIV-positive†Refers to the number of CD4 receptor-bearing lymphocytes ×106/L; only measurements made up to three months before or one month after the start date of treatment of TB were accepted. If multiple measurements were made in this time period the measurement closest to the date of diagnosis of TB was used.‡Quantitative HIV viral loads were assessed in the Provincial Laboratory for Public Health; only measurements made up to three months before or one month after the start date of treatment of TB were accepted. If multiple measurements were made in this time period the measurement closest to the date of diagnosis of TB was used.§2 HSS also listed ‘transfusion’; 10 IDU also listed 'heterosexual'; ‘other’ exposure categories included 2 men who have sex with men, and 2 vertical exposure.