Multiple choice general knowledge

Which of the following would be a possible method to double blind a clinical trial comparing a nasal spray with an oral tablet?

  1. Cross over trial

  2. Stratified randomisation

  3. Double dummy

  4. It is not possible to double blind this trial
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The double-dummy technique is used when comparing treatments with different routes or appearances. Each participant receives both active treatments and their corresponding placebos. For nasal spray vs oral tablet, participants would get both active spray + placebo tablet OR placebo spray + active tablet.

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