I am a PHS II participant, but I havent taken my study pills in a while. Is there any point in resuming now?
Yes! Every participant is irreplaceable. A fundamental principle of clinical trial research is summed up by the adage, Once randomized, always analyzed. Restating this in everyday language, every single man who was randomized to take either active agent or placebo — even if he subsequently stopped taking his pills! — must be classified as a member of the group to which he was assigned, and analyzed as such, to maximize the chance of obtaining a valid study result. Participants who do not take their assigned pills dilute the observed health effects of the vitamins being tested. Resuming your study pills now will help enable the PHS II to determine whether these vitamins can prevent cardiovascular events, cancer, and other diseases in men. If you wish to resume taking the study pills and need calendar packs, please call us toll-free at 1-800-633-6907.
Related Questions
- Last week, my study participant took a consent form home to read it and he signed it at home. He came in today - should I keep the date that he first signed the consent form?
- What is included in synthesis of biomacromolecules in Unit 3 Area of study 1 (first bullet point, p. 22)?
- Is there information available for the Stimson Drain Stormwater Management Phase II Study?
