<unk>  (VITAL)<unk>  is a 7 year<unk>  to run from 2010 to determine the benefits of<unk>  D and<unk> -3 supplements on elderly Americans. Its estimated completion date is November 2018. It aims to enroll 20,000 participants (women 55 or over, men 50 or over) who will be randomized to one of four groups: * daily<unk>  D (2000 IU) and fish oil (1 g); * daily<unk>  D and fish-oil placebo; * daily<unk> -D placebo and fish oil; * daily<unk> -D placebo and fish-oil placebo. Participants will answer annual questionnaires to determine effects on risk of cancer, heart disease, stroke, osteoporosis, diabetes, memory loss and depression.
Vitamin D and Omega-3 Trial
Selenium and Vitamin E Cancer Prevention Trial
FACE risk profile
MIDAS Trial
Study of Tamoxifen and Raloxifene
Estrogen in Venous Thromboembolism Trial
Vulnerability index
NACA score