Fig 5. Multiple factor analysis of bootstrap samples drawn a set of 353 articles on reproducibility.

Shaded areas indicate the peeled convex hulls of points based on 1000 bootstrap replicates plus the original sample, showing an approximate 95% confidence region for each theme. Twenty-nine codes were included in the analysis, but only select codes are displayed for legibility. Colored squares indicate the position of each theme based on the original sample, and black squares indicate the position of each theme based on the overall bootstrap analysis.