Observational Research: Observational research is a study design in which researchers do not actively manipulate variables but instead observe and measure naturally occurring relationships between ...
NEW YORK - October 16, 2020 - A new observational study of deferred lesions following combined fractional flow reserve (FFR) and coronary flow reserve (CFR) assessments found that untreated vessels ...
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 ...
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