Centers for Disease Control and Prevention Wide-ranging Online Data for Epidemiologic Research (WONDER), Multiple-Cause-of-Death file, 2000-2014. 2015. Available at: http://www.cdc.gov/nchs/data/health_ policy/AADR_drug_poisoning_involving_OA_Heroin_US_2000-2014.pdf. Accessed June 9, 2017.
Hill MV, McMahon ML, Stucke RS, Barth RJ Jr Wide Variation and Excessive Dosage of Opioid Prescriptions for Common General Surgical Procedures. Ann Surg. 2017 Apr;265(4):709-714. doi: 10.1097/SLA.0000000000001993.
Hill MV, Stucke RS, McMahon ML, Beeman JL, Barth RJ Jr An Educational Intervention Decreases Opioid Prescribing After General Surgical Operations. Ann Surg. 2018 Mar;267(3):468-472. doi: 10.1097/SLA.0000000000002198.
Rudd RA, Seth P, David F, Scholl L Increases in Drug and Opioid-Involved Overdose Deaths - United States, 2010-2015. MMWR Morb Mortal Wkly Rep. 2016 Dec 30;65(50-51):1445-1452. doi: 10.15585/mmwr.mm655051e1.
The Effect of Decreased Opioid Prescribing on Pain Control and Patient Satisfaction Following Cesarean Section
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
