Duncan Jarvis

We can put that to Carl and everyone else we speak to and hopefully answer some of your questions.

To hear those answers, make sure that you'll subscribe to us on Apple Podcasts, Spotify, or wherever else you get your podcasts from.

All the information that we have on COVID-19 is on bmj.com slash coronavirus.

So check that out as well.

So until just next week, not in a month's time, it's goodbye from me.

And goodbye from me.

Take care of yourselves out there and we'll see you next week.

Welcome back to Talk Evidence, your monthly look at the world of EBM.

I'm Duncan Jarvis, multimedia editor here at the BMJ.

As always, I'm joined by Helen and Carl, who've both made it into the studio today.

Carl, can I get you to introduce yourself?

And Helen.

This week we are going to be doing some starting and some stopping.

Helen, shall we start with you?

So there's that whole like atlas of variation thing that said that, you know, you get these pockets of the way people do medicine.

So, you know, whatever it is, sending people for MRI can be quite a localised thing.

Was there any data about who these people were?

Yeah.

Were they clustered?

We had a really interesting paper about the move to fentanyl because essentially when you've got a black market and things, it's all about maximizing your return or getting the most bang for your buck.