In quality improvement, measurement is seen as a key driver of change - how well do you know you’re doing, if you can’t actually measure it.

So, when something changes in the NHS (say a new guideline) how can you tell how quickly that’s filtering down to the front line.

Ben goldacre, from the Nuffield Department of Primary Care Health Sciences at the University of Oxford, joins us to talk about a new proof of concept published on bmj.com, which uses NHS prescribing data to analyse how change propagated through GP practices.

Read the full open access research:

https://www.bmj.com/content/367/bmj.l5205