نتایج جستجو برای: marginal effect
تعداد نتایج: 1676207 فیلتر نتایج به سال:
background: the marginal length from main tumor in esophageal cancer is a considerable issue regarding surgical management and adjuvant treatment; so we decided to study the contractility effect on the proximal surgical margin after immersing it in10% buffered formalin as a fixative. methods: the proximal marginal length of ten sequential patients with esophageal cancer who underwent transhiat...
BACKGROUND In medical research both propensity score methods and logistic regression analysis are used to estimate treatment effects in observational studies. From literature reviews it has been concluded that treatment effect estimates from both methods are quite similar. With this study we will show that there are systematic differences which can be substantial. METHODS We used a simulated ...
Background and Aim: Since fluoride therapy is usually the first step of treatment in pediatric dentistry and it may interfere with other treatments, such as composite fill-ing, this study aimed to evaluate the possible effects of topical pre-fluoride therapy on marginal microleakage of composite restorations in deciduous teeth. Materials and Methods: In this in-vitro study, 30 deciduous canine...
Abstract In this paper, we introduce the notion of a marginal tube, which is hypersurface foliated by surfaces. It generalises marginally trapped tube and several notions black hole horizons, for example trapping isolated dynamical etc. We prove that if every spacelike section surface, then null. There no assumption on topology tube. To it, study geometry surfaces in four-dimensional spacetime ...
This paper investigates the effects of markup shocks of domestic and export goods prices on macroeconomic variables by using a Dynamic Stochastic General Equilibrium (DSGE) model for Iran, in order to examine the effect of the growth of market power and monopoly in domestic and exporting markets from a macroeconomic viewpoint. To this end, the optimal pricing process of domestic, importing and ...
BACKGROUND In matched-pair cohort studies with censored events, the hazard ratio (HR) may be of main interest. However, it is lesser known in epidemiologic literature that the partial maximum likelihood estimator of a common HR conditional on matched pairs is written in a simple form, namely, the ratio of the numbers of two pair-types. Moreover, because HR is a noncollapsible measure and its co...
statement of the problem: although all-ceramic restorations are broadly used, there is a lack of information concerning how their fit is affected by fabrication procedure and marginal configuration. purpose: the purpose of this study was to evaluate the marginal fit of zirconia cad/cam ceramic crowns before and after porcelain firing. the influence of finish line configuration on the marginal f...
Introduction: In spite of improvements in composite function, marginal microleakage in deep composite restoration is still considered as a challenge due to unstable bond between composite and dentin. Therefore, this study aimed to investigate effect of applying different materials on marginal microleakage in posterior composite restoration. Methods: A standard distal box was prepared on 80 hum...
OBJECTIVES The Urban Health Initiative (UHI) was initiated in 2009 with the goal of increasing family planning (FP) use among the poor in urban areas of Uttar Pradesh, India. The Measurement, Learning & Evaluation project (MLE) was tasked with rigorous impact evaluation of the UHI. This paper presents the impact evaluation findings of the UHI program. STUDY DESIGN The MLE design includes a lo...
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