Farnham PG, Sansom SL, Hutchinson AB How much should we pay for a new HIV diagnosis? A mathematical model of HIV screening in US clinical settings. Med Decis Making. 2012 May-Jun;32(3):459-69. doi: 10.1177/0272989X11431609. Epub 2012 Jan 12.
Hall G, Li K, Wilton L, Wheeler D, Fogel J, Wang L, Koblin B A Comparison of Referred Sexual Partners to Their Community Recruited Counterparts in The BROTHERS Project (HPTN 061). AIDS Behav. 2015 Dec;19(12):2214-23. doi: 10.1007/s10461-015-1005-2.
Horberg M, Raymond B Financial policy issues for HIV pre-exposure prophylaxis: cost and access to insurance. Am J Prev Med. 2013 Jan;44(1 Suppl 2):S125-8. doi: 10.1016/j.amepre.2012.09.039. Review.
Khan L Transgender health at the crossroads: legal norms, insurance markets, and the threat of healthcare reform. Yale J Health Policy Law Ethics. 2011 Summer;11(2):375-418.
Matts JP, Lachin JM Properties of permuted-block randomization in clinical trials. Control Clin Trials. 1988 Dec;9(4):327-44.
Navigating Insurance Coverage Expansion (NICE): A Collaboration to Increase Access to Care for Black and Hispanic Men Who Have Sex With Men and Transgender Persons
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.
