Number and percentage of figures that displayed each of the assessed comprehension faults
| N | % of 79 figures | |
| 1. The figure type is inappropriate (eg, a line graph implying change over time is used when a bar graph is the appropriate figure). | 1 | 1 |
| 2. The y-axis is inverted. | 0 | 0 |
| 3. The y-axis is truncated at the start (not starting at the true minimum value, for example, starting at 50% and not at 0%). | 17 | 22 |
| 4. The y-axis is truncated at the end (not ending with the true maximum value, for example, ending at 50% and not at 100%). | 17 | 22 |
| 5. The number of participants per group is not mentioned. | 63 | 80 |
| 6. There are no error bars or confidence intervals displayed. | 61 | 77 |
| 7. In cases where multiple figures are used to display the outcomes in the compared groups: the graph features are not consistent (eg, y-axis from 0% to 100% for group A but y-axis from 0% to 50% for group B). | 1 | 1 |
| 8. In case of bar graphs, stacked bar graphs are used in a way that does not facilitate the comparison between the different categories. | 3 | 4 |