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Table 1 Tuberculosis incidence density and relative risk stratified by age

From: Tuberculosis incidence in a cohort of individuals infected with human T-lymphotropic virus type 1 (HTLV-1) in Salvador, Brazil

  HTLV-1-infected group HTLV-1 uninfected controls   
  TB cases Person year ID/1000 TB cases Person year ID/1000 RR CI 95 %
0 to 30ys 4 2,254 1.8 19 19,845 1.1 1.9 0.6–5.5
31 to 50ys 15 4,477 3.4 12 12,058 1.0 3.4 1.6–7.2
>50ys 14 3,263 4.3 9 4,737 1.9 2.3 1.0–5.2
All 33 9,994 3.3 40 36,640 1.1 2.6 1.6–4.2
  1. Age at the TB diagnosis. HTLV-1 = Human T-lymphotropic virus type 1; TB = tuberculosis; ID = Incidence density RR- relative risk adjusted using Mantel-Hansel test CI: confidence interval