Hard of Hearing — Audiology Visits After Screening for Hearing Loss: An RCT
Citation(s)
Bogardus ST Jr, Yueh B, Shekelle PG Screening and management of adult hearing loss in primary care: clinical applications. JAMA. 2003 Apr 16;289(15):1986-90.
Collins MP, Souza PE, Yueh B Effects of group versus individual hearing aid visits. Journal of The American Auditory Society. 2007 Mar 1; 31(1):34.
Kezirian EJ, White KR, Yueh B, Sullivan SD Cost and cost-effectiveness of universal screening for hearing loss in newborns. Otolaryngol Head Neck Surg. 2001 Apr;124(4):359-67.
Yueh B, Collins MP, Souza PE Effects of depression on self-report hearing outcomes. Journal of The American Auditory Society. 2007 Mar 1; 32(1):32.
Yueh B, Shapiro N, MacLean CH, Shekelle PG Screening and management of adult hearing loss in primary care: scientific review. JAMA. 2003 Apr 16;289(15):1976-85. Review.
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.
