Fig. 2

MUAC Z-score color risk category as measured by staff versus health volunteers. The confusion matrix displays the counts in the cells, and color indicates agreement. Negative values on the off diagonals signify disagreement and vary in intensity of blue, whereas positive values on the diagonal represent agreement and vary in intensity of orange. For example, the cell at the intersection of MUAC-CI Staff “SAM” and MUAC-Volunteer “MAM” is lighter orange because there is 50% disagreement (3/6 measurements misclassified at that level). In contrast, MUAC-CI Staff “Normal” and MUAC-Volunteer “At Risk, Over” is very light blue because the disagreement at that level is only 3% (13/459)