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. 2014 Jul 3;9(7):e101134. doi: 10.1371/journal.pone.0101134

Figure 2. Scree plot.

Figure 2

Mean matching distance across match-variables plotted against matching iteration number (number of observational participants matched with every trial participant). Matching was based on protein E%, carbohydrate E%, glycemic index, body mass index and waist circumference. Example of one of the ten random orders of the trial dataset is shown. E%: percent of energy intake.