Skip to main content

Table 2 Genotyping results for homeless and non-homeless persons with TB on the Island of Montreal, 1996-2007

From: Tuberculosis and homelessness in Montreal: a retrospective cohort study

  Homeless (n = 20) Non-Homeless (n = 1803) Odds Ratio or P-Value
TB Isolates Genotyped, % of Culture-Positive 20 100% 1521 95% -
High-copy* isolates, % of Genotyped 17 85% 1257 83% OR = 1.2 (95% CI = 0.35-4.1)
Genetically Clustered†, % of Genotyped 11 55% 286 19% OR = 5.3 (95% CI = 2.2-13)
  1. *Isolates with 6 or copies of the IS6110 insertion sequence; matching 'low-copy' isolates were also characterized by spoligotype
  2. †Identical to one or more isolate by IS6110-RFLP (and spoligotype if less than 6 bands)