Table 3 Frequency of nomenclature used
Nomenclature | Number of sources |
|---|---|
Pilot trial/study | 16 |
Feasibility trial/study | 8 |
Feasibility and piloting stage | 5 |
Pilot and/or feasibility trial/study | 5 |
Phase II trial/study | 3 |
Exploratory trial/study | 3 |
Other terms (external pilot, feasibility studies but not pilot studies, non-randomised pilot studies, randomised feasibility studies, randomised pilot studies, exploratory pilot study, feasibility RCT, formative study, phase II stage, pilot RCT, process evaluation with a pilot trial, randomised feasibility trial, randomised pilot trial) | Terms presented once or twice across different sources of guidance. |