Defining, Quantifying, and Interpreting “Noncollapsibility” in . . . Noncollapsibility refers to the circumstance where the measure of association conditioned on some factor is unequal to the marginal measure collapsed over strata of that factor, and is a property of the model (i e , a population-level phenomenon) rather than the estimation process
Noncollapsibility and its role in quantifying confounding bias in . . . Noncollapsibility may not only affect the differences between the effect estimates from a univariable- and multivariable regression model, it also causes differences between the effect estimates from a multivariable regression model and an IPW model
Noncollapsibility, confounding, and sparse-data bias. Part 1: The . . . Noncollapsibility can render odds ratios problematic for estimating effects in special subgroups or patients, and can be amplified when adjusting for many covariates; it also raises the question of how to present results from logistic regression, whose exponentiated coefficients represent odds ratios
Is there a mathematical definition of non-collapsibility? When teaching GLMs, it's commonly taught that the linear and log link are collapsible but that the logit is not The log link is collapsible because the curves are proportional and the means are modeled with ratios The linear link is collapsible because the trend-lines are parallel and the means are modeled with differences
A Note on the Noncollapsibility of Rate Differences and Rate Ratios In this article, we use graphical arguments to explain why the rate difference ratio does not inherit collapsibility from the risk difference ratio We also explain when and why the exposure coefficient in the Aalen additive hazards model is collapsible
Noncollapsible - The Free Dictionary Define noncollapsible noncollapsible synonyms, noncollapsible pronunciation, noncollapsible translation, English dictionary definition of noncollapsible Adj 1 noncollapsible - not capable of collapsing noncollapsable collapsable, collapsible - capable of collapsing or being collapsed; "a collapsible boat"
Parameter collapsibility and noncollapsibility in statistical models . . . What causes non-collapsibility? Time-to-event models – what’s the complication? Greenland and Pearl (2011)de昀椀necollapsibilityas When an adjustment does not alter a measure, the measure is said to be collapsible over C or invariant with respect to the adjustment