Propensity score weighting adjustment is commonly used to handle unit nonresponse. When the response mechanism is nonignorable in the sense that the response probability depends directly on the study ...

Causal inference with observational data frequently relies on the notion of the propensity score (PS) to adjust treatment comparisons for observed confounding factors. As decisions in the era of "big ...

In addition, the propensity score itself can be included in a regression model estimating the effect of the intervention on the outcome, a method that also allows for additional adjustment for ...

Our foray into causal analysis is not yet complete. Until we define the methods of causal inference, we can't get to the deeper insights that causal analysis can provide. This article details many of ...

This was a longitudinal observational cohort study employing a database on hypertensive patients that we previously used to investigate the association of renal impairment with new-onset AF. 12 From ...

An asthma case management program increased preventive care but did not significantly decrease markers of exacerbations. Objective: To estimate the treatment effect of participation in an asthma ...

Aprotinin has recently been associated with adverse outcomes in patients undergoing cardiac surgery. We reviewed our experience with this agent in patients undergoing cardiac surgery at Duke ...