Corley, Douglas A.Haas, JenniferKobrin, Sarah2018-06-202016Corley, Douglas A., Jennifer S. Haas, and Sarah Kobrin. 2016. “Reducing Variation in the ‘Standard of Care’ for Cancer Screening.” JAMA 315 (19) (May 17): 2067. doi:10.1001/jama.2016.3067.0098-7484http://nrs.harvard.edu/urn-3:HUL.InstRepos:37136758Standard of care for cancer screening: the term implies certainty and consensus. Physicians, patients, and organizations have created guidelines, policies, and regulations regarding how, when, and for whom screening should be used or reimbursed; cumulatively, these statements become the standards of care. However, these standards vary markedly across organ type, often without rationale or evidence. In this Viewpoint, we highlight 3 areas in which cancer screening standards differ markedly for breast, colorectal, and cervical cancer: funding, quality measures, and reporting. These variations were delineated through a cross-disciplinary collaboration among scientists, health care organizations, and society leaders within the National Cancer Institute’s (NCI’s) Population-Based Research Optimizing Screening Through Personalized Regimens (PROSPR) consortium.1 PROSPR studies how breast, cervical, and colorectal cancer screening is implemented in diverse, real-world settings.en-USJournal Article2018-06-2010.1001/jama.2016.3067