Fig. 1From: Performance of the BD FACSPresto near to patient analyzer in comparison with representative conventional CD4 instruments in CameroonComparison between FACSPresto and PIMA. Passing-Bablok regression plot comparison of a absolute CD4 count values obtained from FACSPresto with the PIMA as reference standard. The solid line represents the regression line and dashed line the 95% CI. Pollock plots indicating  %mean bias between b absolute CD4 counts values obtained on FACSPresto compared with those obtained on the FACSCount. The solid line represents the mean bias, the dashed line represents mean bias ± 1.96SDBack to article page