<p>Linear regression analysis plots (right column) and Bland Altman bias plots (left column) with upper and lower 95% limits of agreement (LOA) shown as broken lines and mean bias shown as an unbroken line. A. and B. PIMA versus BD FACS both performed at an urban (reference) laboratory, by a single laboratory technician, C. and D. BD FACS versus PIMA both performed at the rural laboratory by a single laboratory technician, E. and F. BD FACS performed by laboratory technician at an urban laboratory PIMA versus PIMA performed by clinical staff at an urban clinic, G. and PIMA. BD FACS performed at by laboratory technician at a rural laboratory versus PIMA performed at two rural clinics by clinical staff.</p
<p>Bias (circles) is a measure of accuracy (lower absolute values = better accuracy). 9%% LOA (error...
Introduction: Point-of-care CD4 testing attracts global interest particularly in resource-constraine...
The grey zone corresponds with the predefined acceptable limits of difference, which were arbitrary ...
<p>Linear regression analysis plots (right column) and Bland Altman bias plots (left column) with up...
<p>Linear regression analysis plots (right column) and Bland Altman bias plots (left column) with up...
<p>*Bland-Altman analysis of bias (average difference)</p><p>LOA: limits of agreement (lower, upper)...
<p>(a) Passing-Bablok regression plot comparison of absolute CD4 count between PIMA and FACSCalibur;...
<p>Passing-Bablok regression plots: comparison of absolute CD4 counts obtained by the PIMA POC CD4 a...
<p>*Bland-Altman analysis of bias (average difference)</p><p>LOA: limits of agreement (lower, upper)...
<p>CD4% obtained by CyFlow miniPOC were compared to those from FACSCalibur (A and C) and those from ...
<p>Linear regression analysis and Bland-Altman analysis of absolute CD4+ T lymphocyte counts between...
<p>the x-axis represents the average of CD4 count from Pima CD4 and FACSCount, and the y-axis repres...
Bland and Altman's limits of agreement have traditionally been used in clinical research to assess t...
<p>Bland-Altman plots of <b>(A)</b> CD4 T-cells < 200/mm<sup>3</sup>, <b>(B)</b> between 200 and 350...
<p>In Passing–Bablok regression plots, the solid line represents the regression line and the dashed ...
<p>Bias (circles) is a measure of accuracy (lower absolute values = better accuracy). 9%% LOA (error...
Introduction: Point-of-care CD4 testing attracts global interest particularly in resource-constraine...
The grey zone corresponds with the predefined acceptable limits of difference, which were arbitrary ...
<p>Linear regression analysis plots (right column) and Bland Altman bias plots (left column) with up...
<p>Linear regression analysis plots (right column) and Bland Altman bias plots (left column) with up...
<p>*Bland-Altman analysis of bias (average difference)</p><p>LOA: limits of agreement (lower, upper)...
<p>(a) Passing-Bablok regression plot comparison of absolute CD4 count between PIMA and FACSCalibur;...
<p>Passing-Bablok regression plots: comparison of absolute CD4 counts obtained by the PIMA POC CD4 a...
<p>*Bland-Altman analysis of bias (average difference)</p><p>LOA: limits of agreement (lower, upper)...
<p>CD4% obtained by CyFlow miniPOC were compared to those from FACSCalibur (A and C) and those from ...
<p>Linear regression analysis and Bland-Altman analysis of absolute CD4+ T lymphocyte counts between...
<p>the x-axis represents the average of CD4 count from Pima CD4 and FACSCount, and the y-axis repres...
Bland and Altman's limits of agreement have traditionally been used in clinical research to assess t...
<p>Bland-Altman plots of <b>(A)</b> CD4 T-cells < 200/mm<sup>3</sup>, <b>(B)</b> between 200 and 350...
<p>In Passing–Bablok regression plots, the solid line represents the regression line and the dashed ...
<p>Bias (circles) is a measure of accuracy (lower absolute values = better accuracy). 9%% LOA (error...
Introduction: Point-of-care CD4 testing attracts global interest particularly in resource-constraine...
The grey zone corresponds with the predefined acceptable limits of difference, which were arbitrary ...