• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

The Zelen's randomized consent designs are modifications to a standard randomized controlled trial (RCT), in which participants are asked for consent to take part in the trial after randomization has taken place. Marvin Zelen proposed two modifications: In the single-consent ...

    • Loading...
    locked icon

    Sign in to access this content

    Get a 30 day FREE TRIAL

    • Watch videos from a variety of sources bringing classroom topics to life
    • Read modern, diverse business cases
    • Explore hundreds of books and reference titles