Unprecedented study across 17m UK health records reveals Covid risk factors

The project, including source code: https://opensafely.org/

Press release: https://opensafely.org/press-releases/2020/05/covid-risk-fac...

Paper (not yet peer-reviewed): https://www.medrxiv.org/content/10.1101/2020.05.06.20092999v...

Interesting part of the thread about how they did it without putting patients' data at risk: https://twitter.com/bengoldacre/status/1258431405450833921