Figure 3 | Scientific Reports

Figure 3

From: Removal of Diethylhexyl Phthalate from Hands by Handwashing: Evidence from Experimental N-of-1 and Crossover Designs

Figure 3

Flowchart of the different study designs. (a) First experimental episode of the N-of-1 on one female subject; (b) Second experimental episode of the N-of-1 on one female subject (c) Crossover study on 28 subjects. The interventional studies included prewash with water rinsing (cross), then direct dispersing of 0.5 mL of 1000 μg/mL standard DEHP solution evenly over both hands (arrow), handwashing with soap and water (circle) or water only (square), and additional water rinsing (triangle). A washout period of 60 min was implemented between each handwashing intervention, and repeats of the intervention pairs were separated by 24 hrs.

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