Table. Comparison of Cancer Radiotherapy Site-Specific and General Consent Form Readability by 7 Readability Indices.
| Readability Score | P Value | ||||||
|---|---|---|---|---|---|---|---|
| Across Consent Forms | Pairwise Comparison Between Consent Formsa | Brain vs General Medical | General RT vs General Medical | ||||
| Breast vs Brain | Breast vs General RT | Breast vs General Medical | Brain vs General RT | ||||
| DRP (GE) | .003 | .98 | .02 | .06 | .04 | .11 | .95 |
| FK | <.001 | .99 | <.001 | .007 | <.001 | .009 | .95 |
| FORCAST | .31 | NA | NA | NA | NA | NA | NA |
| Fry | .048 | .91 | .55 | .03 | .94 | .11 | .18 |
| GF | .001 | .99 | .002 | .22 | .01 | .36 | .96 |
| Raygor | .29 | NA | NA | NA | NA | NA | NA |
| SMOG | <.001 | .99 | <.001 | .008 | <.001 | .007 | .96 |
Abbreviations: DRP (GE), Degrees of Reading Power (Grade Equivalent); FK, Flesch-Kincaid; FORCAST, Ford, Caylor, Sticht; GF, Gunning Fog; NA, not applicable; RT, radiotherapy; SMOG, Simple Measure of Gobbledygook.
a
P values for comparison across the four consent forms determined using analysis of variance (ANOVA). P values for pairwise comparisons between forms was determined using the Tukey test for readability scores with significant difference (P < .05) across the forms on ANOVA. Significant Tukey results are P < .05. In all significant pairwise comparisons, site-specific (breast or brain) readability scores were lower (easier to read) than those for general (general RT or general medical) forms.