FIG 6 .

Correlation between journal impact factor and percentage of papers with image duplication. Only papers from 2005 to 2014 (n = 17,816) were included in this analysis. Each data point represents a journal included in this study (n = 40), with data points color-coded according to the publisher (n = 14; journals published by AAAS, Nature, Cell Press, the National Academy of Sciences, and the Rockefeller University Press are grouped under “other.”) The x axis is shown on a logarithmic scale due to the small number of journals with a high impact factor included in this study. The blue line shows a linear regression model. The gray zone depicts the 95% confidence interval.