نتایج جستجو برای: clinical sample
تعداد نتایج: 1522499 فیلتر نتایج به سال:
Abstract Background and objectives: Pseudomonas aeruginosa as an opportunistic pathogen can establish lethal infections in immunocompromised patients or those exposed to predisposing factors. This bacterium contains a single polar flagellum causing motility, chemotaxis and colonization in acute phase of infection. The flagella filament is made up of a structural protein called flagellin. This s...
In two-stage randomization trials subjects are first randomized to an initial treatment, and then if and when a response (or nonresponse) criterium is met, re-randomized to a second-stage treatment. When the primary outcome is a time to event, sample size calculation is challenging because the variances of common estimators depend in a complex manner on the joint distribution of primary time to...
INTRODUCTION The purpose of this article was to evaluate the quality of sample size calculation reports in published clinical trials in Journal of Endodontics and International Endodontic Journal in years 2000-1 and 2009-10. MATERIALS AND METHODS Articles fulfilling the inclusion criteria were collected. The criteria were: publication year, research design, types of control group, reporting s...
In this paper we introduce a stochastic optimization method based ona mixed Bayesian/frequentist approach to a sample size determinationproblem in a clinical trial. The data are assumed to come from a nor-mal distribution for which both the mean and the variance are unknown.In contrast to the usual Bayesian decision theoretic methodology, whichassumes a single decision maker, our method recogni...
Background and Objectives: A considerable number of clinical trials are conducted in Iran each year. Not much is known about the characteristics of them, this study aimed to investigate key characteristics of Iranian clinical trials. Methods: All clinical trial protocols registered in IRCT until November 2013 were selected. Text mining techniques were used to extract information from data t...
This paper reports the results of a preliminary study, which examined the criterion validity and reliability of a Farsi version of the State-Trait Anger Expression Inventory (STAXI-2) amongst a clinical sample with psychological disorders. Four hundred and fifty-one patients with the mean (SD) age of 31.2 (9.7) years who met the DSM-IV-TR criteria for only one of the following disorders: anxiet...
دیابت قندی شایعترین بیماری متابولیک بوده که نتیجه نقص کامل، نسبی و یا مقاومت به عمل انسولین است و دارای عوارض قلبی - عروقی ، عصبی ، کلیوی و چشمی می باشد. هدف ازاین مطالعه experimental که از نوع clinical trial(befor and after) انجام شده ، بررسی اثر آلپرازولام بر روی کاهش قند خون ناشتا fbs در بیماران مبتلا به تیپii دیابتniddm است.
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