In medicine, a cohort study is often undertaken to obtain evidence to try to refute the existence of a suspected association between cause and effect; failure to refute a hypothesis often strengthens confidence in it.
Rifampin (Rifadin Â®) is a prescription antibiotic that comes in oral (taken by mouth) and injectable forms. Oral rifampin is approved for the following uses: 1  To treat tuberculosis, usually along with other tuberculosis medications.
Prempro is used to treat the symptoms of menopause such as hot flashes, and vaginal dryness, burning, and irritation, and to prevent thinning of the bones (osteoporosis). Prempro should not be used to prevent heart disease or dementia, because this medication may actually increase your risk of developing these conditions.