Database: Pubmed 1946 to Present. (health literacy[MeSH Terms]) AND ((((((((((((((((((Back Pain[MeSH Terms]) OR Back Ache[MeSH Terms]) OR Back Pain with Radiation[MeSH Terms]) OR Back Pain without Radiation[MeSH Terms]) OR Backache[MeSH Terms]) OR Vertebrogenic Pain Syndrome[MeSH Terms]) OR Low Back Pain[MeSH Terms]) OR Low Back Ache[MeSH Terms]) OR Low Back Pain, Mechanical[MeSH Terms]) OR Low Back Pain, Posterior Compartment[MeSH Terms]) OR Low Back Pain, Postural[MeSH Terms]) OR Low Back Pain, Recurrent[MeSH Terms]) OR Low Backache[MeSH Terms]) OR Lower Back Pain[MeSH Terms]) OR Lumbago[MeSH Terms]) OR Mechanical Low Back Pain[MeSH Terms]) OR Postural Low Back Pain[MeSH Terms]) OR Recurrent Low Back Pain[MeSH Terms]) No search filters used (e.g. specifying years, language). Database: Google Scholar “Health Literacy” AND (“Back Pain” OR “Back Ache” OR “Back Pain with Radiation” OR “Back Pain without Radiation” OR “Vertebrogenic Pain Syndrome” OR “Low Back Pain” OR “Low Back Ache” OR “Mechanical Low Back Pain” OR “Low Back Pain Posterior Compartment” OR “Postural Low Back Pain” OR “Recurrent Low Back Pain” OR “Low Backache” OR “Lower Back Pain” OR “Lumbago” OR “Mechanical Low Back Pain” OR “Postural Low Back Pain” OR “Recurrent Low Back Pain”) No search filters used (e.g. specifying years, language). Analysed from page 1 to 520 of the above Google Scholar query.