Devaluing the currency
We are very concerned that for a trial with a sample size of 232 the
BMJ accepts the descriptor 'large' in the title. This suggests a
benchmark for the size of pragmatic RCTs of rehabilitation interventions.
There are a number of published and ongoing trials with two or three times
as many participants and at least one with more than 10 times this many.
Surely it is only these definitive trials powered to show small between
group differences that should be described as large?
Competing interests: No competing interests