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Table 2 Factors associated with lost to follow-up of children exposed to HIV in Porto Alegre, 2000—2017

From: Factors associated with loss to follow up among HIV-exposed children: a historical cohort study from 2000 to 2017, in Porto Alegre, Brazil

  Unadjusted RR RRa CI 95% p Adjusted RRb CI 95% p
Age range     < 0.001    0.003
  Up to 22 1.26 1.13–1.41   1.25 1.09–1.43  
  23—26 1.13 1.01–1.28   1.13 0.97–1.31  
  27—31 1.01 0.89–1.14   1.01 0.87–1.17  
  32 or more 1    1   
Race/Color    0.001    0.013
  White 1 -   1 - -
  Black or mixed 1.15 1.06–1.25   1.13 1.03–1.25  
Schooling     < 0.001     < 0.001
  Up to three years 1.46 1.30–1.65   1.45 1.26–1.67  
  Between four and seven years 1.14 1.04–1.26   1.14 1.02–1.28  
  Eight years or more 1    1   
Intravenous drug use
  Yes 1.25 1.09–1.44 0.001 1.29 1.12–1.50 0.001
  No 1 - - 1 - -
HIV diagnosis
  During prenatal care or at delivery 1.45 1.32–1.58  < 0.001 1.37 1.24–1.52  < 0.001
  Before prenatal care 1 - - 1 - -
  1. aUnadjusted RR estimated by Poisson regression model with robust variation
  2. bAdjusted RR estimated by Poisson regression model with robust variation