The US Preventive Services Task Force (USPSTF) was created in 1984 as an independent, volunteer panel of national experts in prevention and evidence-based medicine. It works to improve the health of all Americans by making evidence-based recommendations about clinical preventive services such as screenings, counseling services, and preventive medications. Any USPSTF recommendation on a clinical service is based on a review of existing peer-reviewed medical evidence, and the clinical service is then assigned a grade of A through D, where A recommends for and D against the service, or an "I statement" when evidence is insufficient or of too poor quality to assess the balance of benefits and harms. USPSTF recommendations do not consider the costs of a preventive service.
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