Routinely collected health data are data collected for purposes other than research or without specific a priori research questions developed before collection.1 Examples include clinical information ...

I am writing with regard to the commentary by Nicholls and colleagues,1 and the linked study by Tang and colleagues.2 Both papers make important observations about the secondary-use value of routinely ...

Studies that use UK hospital coding data to examine 'weekend effects' for acute conditions, such as stroke, may be undermined by inaccurate coding, suggests new research.