In their recent article in Journal of Clinical Oncology, Soni et al 1 compared findings from randomized controlled trials (RCTs) in oncology with analogous observational comparative effectiveness ...

Please provide your email address to receive an email when new articles are posted on . Studies using observational data to compare drug effectiveness must report the proportion of patients who stop ...

OBJECTIVE To assess the effectiveness of hydroxychloroquine in patients admitted to hospital with coronavirus disease 2019 (covid-19) pneumonia who require oxygen. DESIGN Comparative observational ...

M.J.S. and D.E.S. contributed equally to this work. Comparative efficacy research performed using population registries can be subject to significant bias. There is an absence of objective data ...

The evidence assessed by the external assessment centre (EAC) included 19 studies, all of which were full-text peer-reviewed publications. Of the included studies, 9 were comparative studies (3 ...