Figure 8. Long-Term Effects of Official Recommendations by the CMS and AAOS on Public Interest in Hip Arthroplasty-Related Search Terms.

Mean total search volumes before and after March 2020. Mean relative search volumes are compared between the period before announcements by the CMS and AAOS (January 2015 – Feb 2020) to the period afterward (March 2020 – May 2020). Pre- and post-announcement mean relative search volumes for each term were 70.63% and 63.33% for "hip arthroplasty" (p = 0.246), 83.00% and 59.33% for "hip replacement" (p < 0.0001*), and 74.61% and 68.00% for "total hip arthroplasty" (p = 0.405). Legend: * p < 0.05.

CMS: Centers for Medicare and Medicaid Services; AAOS: American Academy of Orthopaedic Surgeons