Readability of the websites
Readability measures show that on average, only people with at least 11-12 years of education could read and understand the Internet information presented. Based on the results, recommendations were proposed for website developers and clinicians wishing to incorporate Internet information into their practice.
Laplante-Lévesque A, Brännström KJ, Andersson G, & Lunner T (2012). Quality and readability of English-language Internet information for adults with hearing impairment and their significant others. International Journal of Audiology, 51, p. 618-626.