نتایج جستجو برای: wald statistic and risk factors
تعداد نتایج: 17043522 فیلتر نتایج به سال:
reserches show that relationship between human and residential places is based upo both emotional and identity structures. in other words, habitat place is not only the creator of a part of humanistic identity but also form a kind of sentimental and emotional bond that may result in tendency to maintain closeness to a specific place. therefor, formaton of emotional and identity relationship wit...
the present study aimed at exploring cognitions of iranian english teachers within the context of english for academic purposes (eap). to this end, the cognitions of two groups of eap teachers with respect to their pedagogical content knowledge (pck) and their sense of professional identity (pi) were probed. two language teachers and two content instructors who had at least five years of eap te...
Systemic air embolism during percutaneous core needle biopsy of the lung: frequency and risk factors
BACKGROUND Detection of risk factors for an air embolism in the left atrium, left ventricle, or systemic circulation (systemic air embolism, SAE) during a percutaneous core needle biopsy (PCNB) of the thorax. METHODS In a retrospective observational study, all PCNBs of the thorax in 610 patients between 2007 and 2009 were analyzed. The SmartStep™ technique (General Electric) was used for the ...
according to cheng (1999), in recent esl/efl literature, asian (especially east asian) learners of english as a foreign/second language have been arguably reported as reticent and passive learners. the most common allegations are that these students are reluctant to participate in classroom discourse; they are unwilling to give responses; they do not ask questions; and they are passive and over...
BACKGROUND A two-arm non-inferiority trial without a placebo is usually adopted to demonstrate that an experimental treatment is not worse than a reference treatment by a small pre-specified non-inferiority margin due to ethical concerns. Selection of the non-inferiority margin and establishment of assay sensitivity are two major issues in the design, analysis and interpretation for two-arm non...
BACKGROUND Women have generally been found to be the victims of violence, but scant attention has been paid to the characteristics of women who perpetrate aggression and violence. In South Africa, violence is a prevalent societal issue, especially in the Western Cape. METHOD This study aimed at identifying factors that were associated with aggression among a sample of 720 substance-using wome...
this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...
1. INTRODUCTION k-L-p+l. Thus, the Wald statistic X W =-01V-10 can have very low power (Korn Complex surveys usually involve and Graubard 1990). multistage cluster sampling where the selection of primary sampling units (PSU's) is within Alternative test procedures the Wald well-defined strata at the first stage of sampling, test, along with their asymptotic properties, are The standard error of...
Abstract This study examines the pricing of municipal bonds before and after a currency shock in Switzerland. Two approaches are used to decompose treasuries bond spreads into liquidity, maturity, default risk premiums. The first approach is model cross-sectional instrumental variables, second variables with panel data. composition for both approaches, three scenarios: before, throughout, shock...
Despite the successful discovery of hundreds of variants for complex human traits using genome-wide association studies, the degree to which genes and environmental risk factors jointly affect disease risk is largely unknown. One obstacle toward this goal is that the computational effort required for testing gene-gene and gene-environment interactions is enormous. As a result, numerous computat...
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