Instrumental variable methods are a third analytic approach that estimate the effect of an intervention in observational data without requiring the factors that differ between the intervention groups ...

Nancy Dreyer, PhD, MPH, FISE, chief scientific advisor to Picnic Health, shares some of the ways that direct-to-patient approaches have improved observational research. Direct-to-patient approaches ...

Comparative effectiveness research increasingly is being recognized as a priority area in cancer research. Although researchers have been conducting comparative effectiveness research for decades, ...

Observation of nurses during drug administration at a U.K. hospital did not significantly affect the MAE rate; nor did tactful interventions made by the observers to prevent serious errors. Observer ...

A new method of observing and measuring interactions between students and teachers could have interesting impacts on academic achievement. Research has shown that interactions between students and ...

In Figures (a) and (b), the colors depict the uncertainty levels before and after applying optimal observations. In Figure (b), the labeled points and numbers indicate the positions of mooring sites ...

3 Faculty of Kinesiology and Physical Education & Graduate Department of Rehabilitation Science, University of Toronto, Toronto, Ontario, Canada 4 Faculty of Kinesiology and Hotchkiss Brain Institute, ...

The study was part of a large observational study of MAEs in a U.K. teaching hospital and took place between January and June 1998. [22] Two approaches were used to identify any effects of observation ...