Higher 72-hr cumulative fluid balance increased post-operative complication after pancreaticoduodenectomy: Propensity score matched analysis

Propensity score-matched analysis of minimally invasive aortic valve replacement.

BACKGROUND Right mini-thoracotomy and partial sternotomy are widely recognized as effective approaches in minimally invasive aortic valve replacement (AVR). The aim of this study was to evaluate the objective benefits of the respective approaches compared to the conventional approach. METHODS AND RESULTS: A retrospective analysis was performed in 282 consecutive patients who underwent isolated ...

Comment: Analyzing propensity score matched count data.

We offer an explanation to the simulation result of Austin (2009) regarding rate ratios, and argue that unmatched analysis of propensity score matched count data results in conservative statistical inferences on the rate ratios.

The z-difference can be used to measure covariate balance in matched propensity score analyses.

OBJECTIVES The propensity score (PS) method is increasingly used to assess treatment effects in nonrandomized trials. Although there are several methods to use the PS for analysis, matching treated and untreated patients by the PS is recommended by most researchers among other reasons because this allows assessing covariate balance before and after matching. Although the standardized difference...

Post-operative fluid complications.

propensity score analysis

Methods for propensity score analysis (PSA) originated with Rosenbaum and Rubin (1983), as vehicles to sharpen and clarify treatment group comparisons in observational studies. Although highly recommended by many statisticians, and applied often in medical sciences, PSA has seen relatively few applications in the social and behavioral sciences. This paper aims to facilitate sound PSA applicatio...