HIV Infections — Social and Economic Outcomes of HIV/AIDS Care and Treatment in HIV Infected South African Adults
Citation(s)
Beard J, Feeley F, Rosen S Economic and quality of life outcomes of antiretroviral therapy for HIV/AIDS in developing countries: a systematic literature review. AIDS Care. 2009 Nov;21(11):1343-56. doi: 10.1080/09540120902889926. Review.
Rosen S, Ketlhapile M, Sanne I, DeSilva MB Characteristics of patients accessing care and treatment for HIV/AIDS at public and nongovernmental sites in South Africa. J Int Assoc Physicians AIDS Care (Chic). 2008 Jul-Aug;7(4):200-7. doi: 10.1177/154510970
Rosen S, Ketlhapile M, Sanne I, Desilva MB Differences in normal activities, job performance and symptom prevalence between patients not yet on antiretroviral therapy and patients initiating therapy in South Africa. AIDS. 2008 Jul;22 Suppl 1:S131-9. doi:
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.
