Darnall BD, Colloca L Optimizing Placebo and Minimizing Nocebo to Reduce Pain, Catastrophizing, and Opioid Use: A Review of the Science and an Evidence-Informed Clinical Toolkit. Int Rev Neurobiol. 2018;139:129-157. doi: 10.1016/bs.irn.2018.07.022. Epub 2018 Aug 6.
Davis CS, Lieberman AJ, Hernandez-Delgado H, Suba C Laws limiting the prescribing or dispensing of opioids for acute pain in the United States: A national systematic legal review. Drug Alcohol Depend. 2019 Jan 1;194:166-172. doi: 10.1016/j.drugalcdep.2018.09.022. Epub 2018 Nov 3.
Maddalozzo GF, Kuo B, Maddalozzo WA, Maddalozzo CD, Galver JW Comparison of 2 Multimodal Interventions With and Without Whole Body Vibration Therapy Plus Traction on Pain and Disability in Patients With Nonspecific Chronic Low Back Pain. J Chiropr Med. 2016 Dec;15(4):243-251. doi: 10.1016/j.jcm.2016.07.001. Epub 2016 Aug 25.
Stumbo SP, Yarborough BJ, McCarty D, Weisner C, Green CA Patient-reported pathways to opioid use disorders and pain-related barriers to treatment engagement. J Subst Abuse Treat. 2017 Feb;73:47-54. doi: 10.1016/j.jsat.2016.11.003. Epub 2016 Nov 15.
Addressing Opioid Use Disorder With an External Multimodal Neuromodulation Device: Clinical Evaluation of DuoTherm for Opioid-Sparing in Chronic Low Back Pain
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.
