... interpretation of the genotypic resistance information. In particular, thedecline in resistance can be partially explained by the factthat in the early years of 2000, treatment initiation in patients ... treatedpopulation in Portugal, since every patient on treatment isnormally genotypically tested when failing. Our analysiswas performed using the number of patients with a geno-type in the denominator ... before July 2001, wereexcluded from the analysis of MDR, or FCR respectively.While this may not have eliminated the bias entirely, thecontinuing decreasing trends of MDR (and FCR) even in the...