نتایج جستجو برای: stage sampling
تعداد نتایج: 556046 فیلتر نتایج به سال:
SOME RESULTS SUGGEST THAT ATTENTIONAL SELECTION IN GLOBAL/LOCAL PROCESSING OCCURS AT TWO STAGES: an early stage, where global and local information of a hierarchical stimulus is filtered or weighted according to the current goal, and a late stage, where the contents of the stimulus are bound to their respective level. Because it is assumed that binding improves attentional selectivity, accuracy...
A number of indicators for the determination of the disturbance rejection capability of a system have been proposed in the literature in the last two decades. These tools are useful for evaluating early stage process designs and screening regulatory control structures, since they are based on minimal modelling requirements. In previous publications (Hovd and Braatz, 2000; Hovd et al., 2003; Koo...
CLAUDINE LEGAULT. Analyzing Multiple Endpoints with a two-stage group sequential design in clinical trials. (Under the direction of Timothy M. Morgan.) In many clinical trials, the assessment of the response to the various treatments can include a large variety of outcome variables which are generally correlated. Different endpoints may be regarded by the investigators as important in determini...
INTRODUCTION Despite its simplicity, efficiency and reliability, Sri Lanka has not used the Annual Risk of Tuberculosis Infection (ARTI) to assess the prevalence and efficiency of tuberculosis (TB) control. Hence, a national tuberculin survey was conducted to estimate the ARTI. MATERIALS AND METHODS A school-based, cross-sectional tuberculin survey of 4352 children aged 10 years irrespective ...
The purpose of this study was to identify the patients with decreased methotrexate (MTX) clearance as early as possible after the start of high-dose methotrexate (HD-MTX) infusion. Fifty-six patients (age: 18 approximately 83 years) received a HD-MTX infusion (dosage: 1.9 approximately 3.8 g/m2) for 6 h. These patients were retrospectively divided into a low-clearance group and a high-clearance...
1 The Background Elementary courses in statistics introduce at an early stage the key assumption of “random sampling”. In more technical language, the data set is assumed to be identically and independently distributed (i.i.d.). In this framework a range of simple and elegant results can be derived, for example, that the variance of the mean of n observations is 1/n times the variance of the ob...
BACKGROUND Colorectal cancer is the second most common cancer in Malaysia. The prognosis of the disease is excellent if detected at an early stage, but the majority of Malaysian patients present at late stages. We aimed to assess the awareness of cancer warning signs and anticipated delay in help-seeking as possible contributors to this phenomenon. MATERIALS AND METHODS A population-based cro...
This study was to analyze some demographic variables influencing the participation of rural women in the informal sector of Imo State, Nigeria. Descriptive analysis was applied on the data collected from a survey conducted in nine Local Government Areas of Imo State. Two thousand, three hundred and forty women were selected using multistage sampling. The selection of nine LG As constituted the ...
introduction: papsmear test has been performed by public health services since 1991 in iran. although cervix cancer is reported 9 th cause of death in four studied counrties in 1999, unfortunately detection rate of smear test is reported very low. the aim of this study was to determine the cause of low sensitivity of papsmear in hamadan province- north west of iran. materials and methods : 1...
When assessing a patient with lung cancer, it is important to stage the tumor in order to determine prognosis and direct appropriate therapy. Although imaging findings, particularly with CT and PET, can suggest the correct tumor stage, imaging is imperfect in this regard; enlarged and/or hypermetabolic lymph nodes may require sampling for confirmation of presumed tumor stage. A major role for i...
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