Comparison of Image Data and Visually Confirmed Sketches to Evaluate the Technique of Handwashing

Figure 4

Changes in unwashed areas before and after training. Note: Results shown by Mann-Whitney U tests. *p<.05. **p<.01 differences: The difference in the area ratio calculated by subtracting the sketch area ratio from the image area ratio. Sketches: Unwashed areas sketched by participants; Images: Unwashed areas photographed by the capture box.