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Fig. 2 | BMC Medicine

Fig. 2

From: Following the science? Comparison of methodological and reporting quality of covid-19 and other research from the first wave of the pandemic

Fig. 2

Comparing published covid-19 and non-covid research using the classical ‘evidence pyramid’ hierarchy. NB For this illustration, the category ‘observational’ is further divided into cases series and case control/cohort. Not all of our chosen research designs feature on the classical evidence hierarchy pyramid. All differences are significant at P < 0.05

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BMC Medicine

ISSN: 1741-7015

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