Where we looked

1. COVID-END inventory of best evidence syntheses (https://www.mcmasterforum.org/networks/covid-end/resources-to-support-decision-makers/Inventory-of-best-evidence-syntheses/context) – we have screened around 4000 reviews, assessed quality using AMSTAR and abstracted information on up-to-datedness and whether the review teams used GRADE. We then have created an inventory of ~200+ reviews that we think are high quality and up-to-date. The downside is that we prob focus on broader questions rather than the specific clinical questions that you might be interested.

2. Epistemikos L-*VE (https://iloveevidence.com) – this is one of the most comprehensive COVID repositories and includes both SRs and primary studies.

3. McMaster Plus COVID-19 Evidence Alerts (https://plus.mcmaster.ca/COVID-19/) – McMaster PLUS screens a wide range of journals assesses the quality of primary studies and reviews and asks clinicians to rate their newsworthiness. You can sign up for alerts (as a form of knowledge intelligence service) or search their database.

4. COVID19 Recommendations (https://covid19.evidenceprime.ca) – this is abstracting recommendations from some high quality guidelines (but rather bizarrely not WHO treatment guidelines or the Australian living Guidelines)

5. National COVID-19 Clinical Evidence Taskforce (https://covid19evidence.net.au) – these are Australia’s living guidelines that cover a wide range of topics and draw up high quality reviews.

6. UNCOVER (Edinburgh)

7. Cochrane rapid reviews: question bank, process, register, rapid reviews underway or completed: clinical questions: https://www.cochrane.org/news/cochrane-clinical-answers-related-covid-19

8. Primary Care Centre for Evidence Based Medicine (CEBM) at Oxford University https://www.cebm.net/oxford-covid-19/

9. WHO advice and technical guidance

10. Evidence Retrieval Service run by the University of Malaya,

11. UK Zoe/UCL project

12. https://margaretmccartney.com