Exact(3)
The propensity score, as defined by Rosenbaum and Rubin [ 1] is the individual probability of receiving the treatment of interest conditional on the observed baseline covariates.
The methodology involves the use of a variable called an 'instrument' which, in this context, needs to fulfil two criteria: (1) it should be strongly correlated with the characteristics of the neonatal unit at the hospital of birth and (2) it should be uncorrelated with the outcomes of interest conditional on observed covariates and therefore uncorrelated with unobserved confounders.
Findings are presented as parameter estimates from the mixed effects models, interpretable as the change in the average level of the outcome of interest (conditional on the random effect) for every 1 unit increase in the predictor variable for continuous predictors, or as the difference in the outcome of interest between a level of a predictor and a reference level/group for categorical variables.
Similar(56)
The loan would be secured by ship and cargo, but repayment of the capital and payment of interest were conditional on the ship's safe return.
He made clear that his group's interest was conditional on the club moving to Milton Keynes.
Other outcomes of interest were participation rate conditional on willingness to participate, and initial willingness to participate.
Descriptive statistics for the two PNC outcomes of interest from our sample, conditional on covariates, are listed in Table 1.
The method requires the use of instrumental variables, that is, variables that are highly correlated with the endogenous variable (costs), but not with unobserved determinants of the main outcome variable of interest (time to readmission conditional on not dying, time to death).
Whatever value they might have in their own right, their viability as a publishing proposition was conditional on the interest of the large readership of his novels and stories.
Since cancer patient mortality changes with time since diagnosis, it is of interest to assess survival probabilities conditional on surviving up to a certain point [ 20, 21], and not only in survival measured from diagnosis.
Therefore, we set AD = 0 whenever a negative value for the PM10 effect was sampled during the MC procedure, because we were interested in the AD distribution conditional on rejection of the null hypothesis of no PM10 effect in favor of the unilateral alternative hypothesis that exposure increased the risk of death.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com