Surveyed corresponding authors’ responses regarding who was blinded in their trials of those described as double-blinded and what is their personal definition of who is blinded in a single-blind, double-blind and triple-blind trial (total participants: N=40)
| Blinding scenarios | Participants, N | Healthcare providers such as physicians or nurses taking care of a participant, n | Data collectors, n | Outcome assessors, n | Data analysts, n | Manuscript writers, n |
| Who was blinded in your trial described as a double-blind? | 34 | 31 | 32 | 28 | 18 | 10 |
| What is your personal definition of a single-blind trial? | 30 | 5 | 5 | 7 | 4 | 0 |
| What is your personal definition of a double-blind trial? | 37 | 33 | 30 | 25 | 12 | 4 |
| What is your personal definition of a triple-blind trial? | 34 | 34 | 31 | 31 | 26 | 12 |