Evaluating the readability, quality and reliability of online patient education materials on post-covid pain

Background. The use of the Internet to access healthcare-related information is increasing day by day. However, there are concerns regarding the reliability and comprehensibility of this information. This study aimed to investigate the readability, reliability, and quality of Internet-based patient educational materials (PEM) related to "post-COVID-19 pain." Methods. One-hundred websites that fit the purposes of the study were identified by searching for the terms "post-COVID-19 pain" and "pain after COVID-19" using the Google search engine on February 24, 2022. The website readability was assessed using the Flesch Reading Ease Score (FRES), Flesch-Kincaid Grade Level (FKGL), Simple Measure of Gobbledygook (SMOG), and Gunning FOG (GFOG). The reliability, quality, and popularity of the websites were assessed using the JAMA score, DISCERN score/Health on the Net Foundation code of conduct, and Alexa, respectively. Results. Upon investigation of the textual contents, the mean FRES was 51.40 +/- 10.65 (difficult), the mean FKGL and SMOG were 10.93 +/- 2.17 and 9.83 +/- 1.66 years, respectively, and the mean GFOG was 13.14 +/- 2.16 (very difficult). Furthermore, 24.5% of the websites were highly reliable according to JAMA scores, 8% were of high quality according to GQS values, and 10% were HONcode-compliant. There was a statistically significant difference between the website types and reliability (p = 0.003) and quality scores (p = 0.002). Conclusion. The readability level of PEM on post-COVID-19 pain was considerably higher than grade 6 educational level, as recommended by the National Institutes of Health, and had low reliability and poor quality. We suggest that Internet-based PEM should have a certain degree of readability that is in accordance with the educational level of the general public and feature reliable content.