The Mantel-Haenszel procedure was used to obtain the weighted odds ratios and to control for confounding variables.
Multivariate logistic regression was applied to estimate odds ratios, with 95% confidence intervals, and to control for confounding variables.
The matching of groups is a traditional way to control for confounding variables in developmental disabilities research.
Published studies were characterized according to the type of industry studied and design, exposure assessment, disease classification, and control for confounding variables.
And a meta-analysis of the research on breast-feeding done by the United States Agency for Healthcare Research and Quality in 2007 concludes that much of that research is weak: Some studies are too small, or they fail to control for confounding variables.
12. Did the paper control for confounding variables, for example, population heterogeneity/interventional heterogeneity? 13.
To control for confounding variables we performed a multivariatebinomial logistic regression analysis adjusted by Wald test.
To be sure, they needed away to control for confounding variables, especially odor.
Although these studies are encouraging, academic reviews have noted that they have several methodological limitations, notably the inability to control for confounding variables and determine causality, which warrant caution.
To control for confounding variables, we utilized a propensity score matched model, the advantages of which have been previously demonstrated [11, 12, 13].
A multivariate analysis was also performed to control for confounding variables in order to asses the factors associated with no de-escalation.
