We have heard from sources in 2 different regions of the country that they have heard that the ARRISA study has filled its recruitment target. This is not at all true, but it is an interpretation that can arise from an incomplete look at our data from the UKCRN ODP platform. The problem is that our “Target” is expressed in GP Practices and it is 262 practices, while at the same time the recruitment achievement -accruals- is now ~450 (and thus appears to be 171% of target). However the 450 accruals are participants – people - GP surgery staff, and there are 3 or more per practice. A classic apples and oranges comparison.
The information that explains this situation; that our target is expressed in "GP Practices" and that the number of our our accruals -expressed in "persons/participants" - and thus will be much larger, is in the separate field: "Description of Sample Size". The ARRISA-UK study design is different from most studies and measuring study progress by a simple division of "Participants recruited to-date" by "Study Level Targets", which works appropriately for other studies, is completely misleading for ARRISA. It results in an apparently vast overestimate of our recruitment. And unfortunately there is no place readily visible in the UKCRN CPMS site where this can be made clear.
At our current 143 randomised practices we are at about 55% of our target of practices - doing well, but needing to recruit many more.
So. We just want to say: Pay no attention to anyone who tells you that ARRISA-UK has already recruited to and beyond its target. (Or even, though only if you want to, please correct them.)