Erectile Dysfunction — Shock Wave vs. On-demand Tadalafil for Erectile Dysfunction
Citation(s)
Clavijo RI, Kohn TP, Kohn JR, Ramasamy R Effects of Low-Intensity Extracorporeal Shockwave Therapy on Erectile Dysfunction: A Systematic Review and Meta-Analysis. J Sex Med. 2017 Jan;14(1):27-35. doi: 10.1016/j.jsxm.2016.11.001. Epub 2016 Dec 13. Review.
Dong L, Chang D, Zhang X, Li J, Yang F, Tan K, Yang Y, Yong S, Yu X Effect of Low-Intensity Extracorporeal Shock Wave on the Treatment of Erectile Dysfunction: A Systematic Review and Meta-Analysis. Am J Mens Health. 2019 Mar-Apr;13(2):1557988319846749. doi: 10.1177/1557988319846749.
Mo DS, Zhan XX, Shi HW, Cai HC, Meng J, Zhao J, Shang XJ [Efficacy and safety of low-intensity extracorporeal shock wave therapy in the treatment of ED: A meta-analysis of randomized controlled trials]. Zhonghua Nan Ke Xue. 2019 Mar;25(3):257-264. Chinese.
Comparison of the Efficacy and Safety of Low Intensity Extracorporeal Shock Wave Therapy Versus On-demand Tadalafil for Erectile Dysfunction
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.
