منابع مشابه
An Investigation of the Significance of Residual Confounding Effect
BACKGROUND Observational studies are commonly conducted in health research. However, due to their lack of randomization, the estimated associations between the outcome and the exposure can be affected by unmeasured confounding factors. It is important to determine how likely a significant association observed between an outcome variable and a noncausally related exposure may be introduced by re...
متن کاملResidual confounding in observational studies.
To the Editor:—I read the study by Fellahi JL et al. titled “Perioperative use of dobutamine in cardiac surgery and adverse cardiac outcome” with great interest. This study showed that the use of dobutamine was associated with adverse outcomes in adult cardiac surgery, and the authors concluded that these results suggest that dobutamine should only be administered when the benefit is judged to ...
متن کاملResidual Confounding in Observational Studies
To the Editor:—I read the study by Fellahi JL et al. titled “Perioperative use of dobutamine in cardiac surgery and adverse cardiac outcome” with great interest. This study showed that the use of dobutamine was associated with adverse outcomes in adult cardiac surgery, and the authors concluded that these results suggest that dobutamine should only be administered when the benefit is judged to ...
متن کاملCannabis, cognition, and residual confounding.
the results of this study and the knowledge gained from more than a decade of randomized trials of non-oxynol-9 as a vaginal microbicide, it is time to move on. Women at risk for STIs such as chlamydia and gonorrhea are often also at risk for HIV-1. In practical terms, a vaginal microbicide must have no risk of increasing HIV-1 incidence before it can be introduced as a microbicide for other ST...
متن کاملThe ACCE method: an approach for obtaining quantitative or qualitative estimates of residual confounding
BACKGROUND Nonrandomized studies typically cannot account for confounding from unmeasured factors. METHOD A method is presented that exploits the recently-identified phenomenon of "confounding amplification" to produce, in principle, a quantitative estimate of total residual confounding resulting from both measured and unmeasured factors. Two nested propensity score models are construc...
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ژورنال
عنوان ژورنال: Clinical Infectious Diseases
سال: 2017
ISSN: 1058-4838,1537-6591
DOI: 10.1093/cid/cix489