I suspect that you will find some problems like, for example, some of your covariates has a great predictability and this may be an explanation for your unusual findings. Furthermore, I think (I am not so sure about this) that your covariates used in the matching ! algorithm may ...
My approach may also be wrong, so any help would be greatly appreciated! I hope that my explanation is not too confusing! Best and thanks in advance, Luis * * For searches and help try: *http://www.stata.com/help.cgi?search*http://www.stata.com/support/faqs/resources/statalist-faq/...
Propensity score matchingFocal concerns theoryRacial profilingSearchTraffic stopPurpose The purpose of this paper is to examine the issue of racial profiling when the traffic stop outcome is a search using focal concerns theory as a theoretical explanation for police officer decision making and ...
Toward the Integration of Personality Theory and Decision Theory in the Explanation of Economic and Health Behavior Trait-based personality psychology and economics have taken different approaches to understanding individual differences, with the former emphasizing varia... A Rustichini,CG Deyoung,J Anderso...
Propensity score matching is a statistical method that is often used to make inferences on the treatment effects in observational studies. In recent years, there has been widespread use of the technique in the cardiothoracic surgery literature to evaluat
Another significant explanation is that the surgical delay in this study, consistent with the findings of the HIP ATTACK Investigators [48], was defined as the time elapsed from the moment of injury to the definitive surgery, whereas previous studies have defined it as the time calculated from ...
both laparoscopic and robotic gastrectomy procedures have been performed. Patients were offered the choice to undergo robotic or laparoscopic gastrectomy. Each patient was given a detailed explanation for each type of surgery and chose the type of surgery before operation. Written informed consent for ...
Furthermore, competing causes of death may be another explanation for the dose-response association between blood transfusion and overall mortality rather than cancer recurrence. It is hypothesized that the detrimental effect of allogenic blood transfusion on cancer outcomes results from immunological ...
I hope that my explanation is not too confusing! Best and thanks in advance, Luis * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/ ...
Thus, the aim of this study was to compare laparoscopic and open low anterior resection (LAR) using propensity score matching (PSM) analysis. For the economic evaluation, a cost analysis was performed to compare the costs of the two techniques in relation to the short-term outcome. Materials ...