Figure 1

Graphical representation of correlation between: A) Giemsa-stained slide reads using light microscopy in the field and in Kampala using Ministry of Health facilities and between B) slides read using fluorescent microscopy (CyScope^®) and Giemsa-stained slide reads using light microscopy in the field. C) Bland-Altman difference plot comparing fluorescent and light microscopy in the field. The points are plotted with the difference between fluorescent and light microscopy on the y-axis, and the mean of the two observations on the x-axis. The confidence bounds are plotted as dotted red lines, and all points within the confidence bounds are coloured green, all points outside the confidence bounds in red. The region of agreement is the area within the confidence bounds. The black solid line is the "difference = zero line" and the red solid line indicates the "average difference".