http://med.stanford.edu/news/all-news/2021/03/Cancer-diagnoses-implies-patients-wait-for-Medicare.html Latest information on COVID-19 Skip to Content Skip to Local Navigation Skip to Global Navigation Stanford Medicine News Center Site Nav Menu * See us on facebook * See us on twitter * See us on youtube * See us on linkedin * See us on instagram Stanford Medicine Explore Stanford Medicine * Health Care + Find a doctor + Adult-care doctor + Pediatrician or pediatric specialist + Obstetrician + Clinics & Services + Adult care + Pediatric care + Obstetrics + Clinical trials + Locations + Stanford Health Care + Stanford Children's Health + Emergency Department + Dial 911 in the event of a medical emergency Explore Health Care Learn how we are healing patients through science & compassion Back * Research + Basic science departments + Clinical science departments + Institutes + Research centers + See full directory + Research Resources + Research administration + Academic profiles + Clinical trials + Funding opportunities + See all + Professional Training + Postdoctoral scholars + Clinical research fellows Research News Stanford team stimulates neurons to induce particular perceptions in mice's minds Stanford team stimulates neurons to induce particular perceptions in mice's minds Explore Research Learn how we are fueling innovation Back * Education + MD program + PA Programs + PhD programs + Masters programs + Continuing Medical Education + Postdoctoral scholars + Residencies & fellowships + High School & Undergraduate Programs + See all + Education Resources + Academic profiles + School Administration + Basic science departments + Clinical science departments + Alumni services + Faculty resources + Diversity programs + Lane Library + Student resources Education News Students from far and near begin medical studies at Stanford Students from far and near begin medical studies at Stanford Explore Education Learn how we empower tomorrow's leaders Back * Give Support Stanford Medicine + Support teaching, research, and patient care. + Ways to give + Why giving matters + Make a gift online Support Children's Health + Support Lucile Packard Children's Hospital Stanford and child and maternal health + Ways to give + How your gift helps + Make an online gift Back * About + About us + News + Contacts + Maps & directions + Leadership + Vision + Diversity + Global health + Community engagement + Events + How you can help Stanford School of Medicine Stanford Health Care Stanford Children's Health Back * Site Search Submit Search Query News Center Home * Front Page * All News * Topics * Multimedia Email Tweet Jump in cancer diagnoses at 65 implies patients wait for Medicare, according to Stanford study Analyzing a national cancer database, researchers find a bump in diagnoses at 65, suggesting that many wait for Medicare to kick in before they seek care. Mar 30 2021 lung cancer cells Lung cancer cells National Cancer Institute A couple of years ago, Joseph Shrager, MD, professor of cardiothoracic surgery at Stanford School of Medicine, noticed a statistical anomaly in his practice. It seemed that patients were diagnosed with lung cancer at a surprisingly higher rate at 65 years old than, say, at 64 or 66. "There was no reason rates should differ much between the ages of 63 and 65," Shrager said. He talked it over with his thoracic surgeon colleagues at Stanford who said they were seeing something similar. They wondered if the jump in diagnoses might be a result of patients delaying care until they became Medicare eligible at 65. "If this were true, and patients were delaying screenings or treatments for cancer, it could impact their survival," Shrager said. A quick exploratory analysis of their own practices showed a twofold increase in lung cancer surgeries in 65-year-old patients compared with 64-year-olds. "We decided to explore this, and its broader implications, in a larger population," Shrager said. In a follow-up study published March 29 in Cancer, the researchers found a substantial rise nationwide in new cancer diagnoses at 65 -- not only for lung cancer but also for breast, colon and prostate cancer. The four are the most common cancers in the United States. "Essentially we showed there is a big jump in cancer diagnoses as people turn 65 and are thus Medicare-eligible," said Shrager, the senior author of the study. The study's lead author is Deven Patel, MD, a surgical resident at Cedars-Sinai Medical Center in Los Angeles who spent a year as a research fellow at Stanford. "This suggests that many people are delaying their care for financial reasons until they get health insurance through Medicare." A jump in cancer diagnoses Researchers analyzed data from hundreds of thousands of patients who were 61-69 years old and were diagnosed with lung, breast, colon or prostate cancer from 2004 to 2016. The patients, identified from a national database, included 134,991 with lung cancer, 175,558 with breast cancer, 62,721 with colon cancer and 238,823 with prostate cancer. There was a greater jump in lung, breast, colon and prostate cancer diagnoses at the transition from 64 to 65 than at all other age transitions, the research showed. Lung cancer rates showed a consistent increase of 3-4% each year for people aged 61 to 64, then at 65 that percentage doubled. The increase was even more pronounced in people with colon cancer, which showed an annual growth rate of just 1-2% in the years leading up to Medicare eligibility, then jumped to nearly 15% at 65. In the years following age 65, diagnosis rates declined for all cancers, the study found. Joseph Shrager Joseph Shrager The study showed that insured cancer patients (lung, breast, colon, prostate) older than 65 are more likely to undergo surgical intervention, and they had lower five-year cancer-specific mortality rates than did their younger uninsured counterparts. "Collectively, these results demonstrate that Medicare eligibility, an event coincident with becoming 65 years old, is associated with a rise in early-stage cancer diagnoses and a resulting survival benefit," the study concluded. The researchers proposed that a number of factors cause 61- to 64-year-olds to wait for medical treatments and screenings until Medicare eligibility kicks in. "These individuals often lack insurance as a result of early retirement, pre-existing conditions hindering renewal, the high cost of private insurance and other causes," the study said, noting that 13-25% of this group of adults are uninsured or have a gap in medical coverage at some point preceding Medicare eligibility. Previous research has shown that medical insurance is a strong predictor of receiving appropriate care, promoting earlier diagnosis and improved outcomes, the study noted. "If you don't get the right screening or prompt diagnosis you are going to have lower cure rates," Shrager said. "This study underlines the important difference that some sort of Medicare expansion could make." Other Stanford authors include biostatistician Hao He, PhD; Mark Berry, MD, the Mylavarapu Rogers Professor in Cardiothoracic Surgery; medical resident Chi-Fu Jeffrey Yang, MD, now a thoracic surgeon at Massachusetts General Hospital; lab assistant Winston Trope; research assistant Yoyo Wang; Natalie Lui, MD, assistant professor of cardiothoracic surgery; Douglas Liou, MD, clinical assistant professor of cardiovascular surgery; and Leah Backhus, MD, associate professor of cardiovascular surgery. Berry, Backhus and Shrager also have appointments at the Veterans Affairs Palo Alto Health Care System. The authors have no conflicts of interest or funding sources related to this study. --------------------------------------------------------------------- * Press Releases * Tracie White By Tracie White Tracie White is a science writer in the Office of Communications. Email her at tracie.white@stanford.edu. --------------------------------------------------------------------- Stanford Medicine integrates research, medical education and health care at its three institutions - Stanford University School of Medicine, Stanford Health Care (formerly Stanford Hospital & Clinics) , and Lucile Packard Children's Hospital Stanford. For more information, please visit the Office of Communication & Public Affairs site at http://mednews.stanford.edu. 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