Fig. 6
From: A meta-analysis of the performance of the PimaTM CD4 for point of care testing
Scatter plots and bar charts of method comparison parameters of the Pima CD4 compared to reference CD4 technologies. Scatter plot a = Mean cell bias (Pima – Reference) including standard deviation error bars, with the CD4 count represented on the vertical axis. The dotted line indicates 0 bias. Scatter plot b(I) = mean percentage similarity including the % similarity SD, with the vertical axis as % similarity. The dotted line indicates 100 %. Alongside the scatter plot is a bar chart b(II) indicating the overall % similarity CV. Scatter plot (c) = percent bias (difference) including the percent bias SD for all observations with reference technology values >100 cells/μl, with the vertical axis as % difference. The legend indicates the sample size and the dotted line indicates 0 % difference. Plot d is a bar chart representing the concordance correlation between the Pima CD4 and reference technologies. The grey scale shows the strength of agreement (<0.9 = poor; 0.9-0.95 = moderate; 0.95-0.99 = substantial)