Readability of Online Patient Education Materials for Congenital Hand Differences

Background: The aim of the study is to assess the readability of online patient education materials (PEMs) for congenital hand differences. Methods: The top 10 online, English-language PEMs for 10 conditions (polydactyly, syndactyly, trigger finger/thumb, clinodactyly, camptodactyly, symbrachydactyly, thumb hypoplasia, radial dysplasia, reduction defect, and amniotic band syndrome) were compiled and categorized by source and country. Readability was assessed using 5 tools: Flesch Reading Ease Score (FRES), Flesch-Kincaid Grade Level (FKGL), Gunning Fog Index (GFI), Coleman-Liau Index (CLI), and Simple Measure of Gobbledygook Index (SMOG). To account for the potential effect of each condition's name in the aforementioned formulas, the analysis was repeated after replacing the name with a monosyllabic word/s. Results: The mean readability scores of the 100 PEMs were FRES 56.3, where the target was >= 80, FKGL 8.8, GFI 11.5, CLI 10.9, and SMOG 8.6, and the median grade score was 9.8, where the target grade was <= 6.9. Following adjustment, all readability scores improved significantly (P < .001). Postadjustment scores were FRES 63.8, FKGL 7.8, GFI 10.7, CLI 9.1, and SMOG 8.0, and the median grade score was 8.6. Only 1 webpage met the target level using all tools. Two-sample t test for country of publication (the United States and the United Kingdom) demonstrated that PEMs originating from the United Kingdom were easier to read using the preadjustment CLI (P = .009) and median grade metrics (P = .048). A 1-way analysis of variance revealed no influence of condition or source on readability. Conclusion: Most online PEMs for congenital hand differences are written above the recommended reading level of sixth grade, even when adjusted for the effect of the condition's name.