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. 2013 Jan 1;80(1):85–91. doi: 10.1212/WNL.0b013e31827b1a07

Figure 1. PiB retention did not differentiate PD-nl and PD-MCI subjects.

Figure 1

The black line extending across the whole figure represents the grand mean. The green line extending beyond the box for each group represents its mean. The red line for each group within the box represents the group median, box edges show the interquartile range, and box whiskers extend to as much as 1.5 interquartiles above and below the edges. Box width is proportional to group sample size. Subjects who subsequently progressed to a worse diagnosis are depicted as blue triangles, while those who remained stable are shown as red circles. PD-MCI = Parkinson disease with mild cognitive impairment; PD-nl = Parkinson disease with normal cognition; PiB = Pittsburgh compound B.