Quality and readability of websites for patient information on tonsillectomy and sleep apnea

Tonsillectomy is a common treatment for obstructive sleep apnea (OSA). The Internet allows patients direct access to medical information. Since information on the Internet is largely unregulated, quality and readability are variable. This study evaluates the quality and readability of the most likely visited websites presenting information on sleep apnea and tonsillectomy.

The three most popular search engines (Google, Bing, Yahoo) were queried with the phrase "sleep apnea AND tonsillectomy." The DISCERN instrument was used to assess quality of information. Readability was evaluated using the Flesch-Kincaid Reading Grade Level (FKGL) and Flesch Reading Ease Score (FRES).

Out of the maximum of 80, the average DISCERN quality score for the websites was 55.1 (SD- 12.3, Median- 60.5). The mean score for FRES was 42.3 (SD- 15.9, Median- 45.5), which falls in the range defined as difficult. No website was above the optimal score of 65. The mean score for the FKGL was US grade-level of 10.7 (SD- 1.6, Median- 11.6). Only 4(27%) websites were in the optimal range of 6-8. There was very weak correlation between FRES and DISCERN (r = 0.07) and FKGL and DISCERN (r = 0.21).

Tonsillectomy is one of the most common surgeries in the US. However, the internet information readily available to patients varies in quality. Additionally, much of the information is above the recommended grade level for comprehension by the public. By being aware of what information patients are reading online, physicians can better explain treatments and address misunderstandings. Physicians may consider using similar methods to test the readability for their own resources for patient education.