@trishgreenhalgh I am aware of a few papers on this. Here is one https://t.co/GUAK4xCszK Not sure if it's what you are looking for.
Clinical centres rarely enrolled in RCTs with explicit view to ensure external validity #scipol #evidencebasedpolicy http://t.co/AjnglHpOK1
If we want trials to be generalizable trialists need to select their centres to enable this - most don't http://t.co/Kcm4qiEHIC
If we want trials to be generalizable trialists need to select their centres to enable this - most don't http://t.co/Kcm4qiEHIC
If we want trials to be generalizable trialists need to select their centres to enable this - most don't http://t.co/Kcm4qiEHIC
PLOS ONE: Centre Selection for Clinical Trials and the Generalisability of Results: A Mixed Methods Study http://t.co/Z18avoTM01
PLOS ONE: Centre Selection for Clinical Trials and the Generalisability of Results: A Mixed Methods Study http://t.co/Z18avoTM01