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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1966 1
1970 1
1972 1
2004 1
2010 1
2011 1
2012 3
2013 3
2014 6
2015 4
2016 6
2017 4
2018 3
2019 5
2020 7
2021 7
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Page 1
Factors associated with COVID-19-related death using OpenSAFELY.
Williamson EJ, Walker AJ, Bhaskaran K, Bacon S, Bates C, Morton CE, Curtis HJ, Mehrkar A, Evans D, Inglesby P, Cockburn J, McDonald HI, MacKenna B, Tomlinson L, Douglas IJ, Rentsch CT, Mathur R, Wong AYS, Grieve R, Harrison D, Forbes H, Schultze A, Croker R, Parry J, Hester F, Harper S, Perera R, Evans SJW, Smeeth L, Goldacre B. Williamson EJ, et al. Nature. 2020 Aug;584(7821):430-436. doi: 10.1038/s41586-020-2521-4. Epub 2020 Jul 8. Nature. 2020. PMID: 32640463
Introduction to causal diagrams for confounder selection.
Williamson EJ, Aitken Z, Lawrie J, Dharmage SC, Burgess JA, Forbes AB. Williamson EJ, et al. Respirology. 2014 Apr;19(3):303-11. doi: 10.1111/resp.12238. Epub 2014 Jan 22. Respirology. 2014. PMID: 24447391 Free article. Review.
Effect of pre-exposure use of hydroxychloroquine on COVID-19 mortality: a population-based cohort study in patients with rheumatoid arthritis or systemic lupus erythematosus using the OpenSAFELY platform.
Rentsch CT, DeVito NJ, MacKenna B, Morton CE, Bhaskaran K, Brown JP, Schultze A, Hulme WJ, Croker R, Walker AJ, Williamson EJ, Bates C, Bacon S, Mehrkar A, Curtis HJ, Evans D, Wing K, Inglesby P, Mathur R, Drysdale H, Wong AYS, McDonald HI, Cockburn J, Forbes H, Parry J, Hester F, Harper S, Smeeth L, Douglas IJ, Dixon WG, Evans SJW, Tomlinson L, Goldacre B. Rentsch CT, et al. Among authors: williamson ej. Lancet Rheumatol. 2021 Jan;3(1):e19-e27. doi: 10.1016/S2665-9913(20)30378-7. Epub 2020 Nov 5. Lancet Rheumatol. 2021. PMID: 33349815 Free PMC article.
HIV infection and COVID-19 death: a population-based cohort analysis of UK primary care data and linked national death registrations within the OpenSAFELY platform.
Bhaskaran K, Rentsch CT, MacKenna B, Schultze A, Mehrkar A, Bates CJ, Eggo RM, Morton CE, Bacon SCJ, Inglesby P, Douglas IJ, Walker AJ, McDonald HI, Cockburn J, Williamson EJ, Evans D, Forbes HJ, Curtis HJ, Hulme WJ, Parry J, Hester F, Harper S, Evans SJW, Smeeth L, Goldacre B. Bhaskaran K, et al. Among authors: williamson ej. Lancet HIV. 2021 Jan;8(1):e24-e32. doi: 10.1016/S2352-3018(20)30305-2. Epub 2020 Dec 11. Lancet HIV. 2021. PMID: 33316211 Free PMC article.
Introduction to propensity scores.
Williamson EJ, Forbes A. Williamson EJ, et al. Respirology. 2014 Jul;19(5):625-35. doi: 10.1111/resp.12312. Epub 2014 May 29. Respirology. 2014. PMID: 24889820 Review.
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