منابع مشابه
Stated Do Not Necessarily Repre
The effects of physical attractiveness, warmth, and sex of an adult model on imitation behavior of adult males and females were investigated. Subject-were randomly paired with confederates of low or high facial k..,tractiveness who interacted with the subject in a cold-unfriendly or warm-friendly manner. The imitation task involvei the confederate lighting a specified colored light on the subje...
متن کاملInvited commentary: propensity scores.
The propensity score is the conditional probability of exposure to a treatment given observed covariates. In a cohort study, matching or stratifying treated and control subjects on a single variable, the propensity score, tends to balance all of the observed covariates; however, unlike random assignment of treatments, the propensity score may not also balance unobserved covariates. The authors ...
متن کاملDemystifying propensity scores.
1 Health Protection and Influenza Research Group, Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK 2 Department of Anaesthesia, National Hospital for Neurology and Neurosurgery, & Surgical Outcomes Research Centre, University College London Hospital, London, UK 3 Wellcome Department of Imaging Neuroscience, University College London, London, UK 4 Department o...
متن کامل<hw>Propensity Scores
Abstract Propensity scores represent the probability that an individual is assigned to a treatment group given the individual’s scores on a set of covariates. Propensity scores are used in nonrandomized studies to equate treatment and control groups on a large number of covariates measured at baseline. Assumptions necessary for propensity score analysis to yield a valid estimate of t...
متن کاملMatching and Propensity Scores
The popularity of matching techniques has increased considerably during the last decades. They are mainly used for matching treatment and control units in order to estimate causal treatment effects from observational studies or for integrating two or more data sets that share a common subset of covariates. In focusing on causal inference with observational studies, we discuss multivariate match...
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ژورنال
عنوان ژورنال: Anesthesiology
سال: 2008
ISSN: 0003-3022
DOI: 10.1097/aln.0b013e3181864f38