background: due to unpredictability of events in psychiatry environment and replacement of routine clinical experiences with some assignments such as therapeutic communication with patients, clinical training in such environments has been associated with many problems which require continuous review and evaluation.  the purpose of the present research was to determine the effect of applying por...

BACKGROUND The extensive literature concerning the early treatment of anterior open bite (AOB) is still controversial and covers a wide variety of therapeutic approaches. OBJECTIVES The objective of this study was to provide a comprehensive review evaluating the effectiveness of the orthodontic correction of AOB in growing individuals. SEARCH METHODS Search was conducted on PubMed, Embase, ...

There has been an increasing interest in using expected value of information (EVI) theory in medical decision making, to identify the need for further research to reduce uncertainty in decision and as a tool for sensitivity analysis. Expected value of sample information (EVSI) has been proposed for determination of optimum sample size and allocation rates in randomized clinical trials. This art...

BACKGROUND Although temporary cardiac pacing is infrequently needed, temporary epicardial pacing wires are routinely inserted after valve surgery. As they are associated with infrequent, but life threatening complications, and the decreased need for postoperative pacing in a group of low risk patients; this study aims to identify the predictors of temporary cardiac pacing after valve surgery. ...

For many sources of survival data, there is a delay between the recording of vital status and its availability to the analyst, and the Kaplan-Meier estimator is typically inconsistent in these situations. In this paper we identify the optimal estimation problem. As a result of the curse of dimensionality, no globally efficient nonparametric estimator exist with a good practical performance at m...

The incremental life expectancy, defined as the difference in mean survival times between two treatment groups, is a crucial quantity of interest in cost-effectiveness analyses. Usually, this quantity is very difficult to estimate from censored survival data with a limited follow-up period. The paper develops estimation procedures for a time-shift survival model that, provided model assumptions...