• D Gathers, V S Pankratz, M Kosich, and B Tawfik.
• Department of Internal Medicine, University of New Mexico, Albuquerque, NM, United States of America. Electronic address: dgathers@salud.unm.edu.
• Prev Med. 2021 Sep 1; 150: 106695106695.

AbstractBreast Cancer Awareness Month (BCAM) has been used for decades to increase awareness and screening for breast cancer, but its geographic reach and effectiveness is difficult to judge. Using Internet Search Interest (ISI) could allow for better evaluation of BCAM effects. Using Google Trends, we evaluated the ISI for "breast cancer" and "mammogram" for each state and metropolitan area from 2006 to 2019. The ISI represents population level Google internet searches relative to the highest number of searches for the United States over a given period, with a max number of 100. The ISI for each term in October (BCAM) was compared against all other months during this period, across states and across major metropolitan regions. ISI was 2.34 times higher (95% Confidence Interval [CI]: 2.10-2.61, P < .001) in BCAM than the average for all other months combined. Geographically categorized data revealed that there were significant differences in the ISI for "breast cancer" and for "mammogram" among the 50 states, and among major metropolitan areas (P < .001for each). ISI suggests that BCAM is effective at increasing breast cancer related internet searches, with significant heterogeneity across states and metro areas. Google Trends is a publicly available free tool that can be used to assess penetrance of awareness campaigns in a time sensitive and location specific manner for future targeting of populations with low breast cancer awareness. Future research is needed to assess relationships between preventive outcomes and ISI scores.Copyright © 2021 Elsevier Inc. All rights reserved.

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