نتایج جستجو برای: test survey
تعداد نتایج: 1153997 فیلتر نتایج به سال:
In complex survey sampling, a fraction of a finite population is sampled. Often, the survey is conducted so that each subject in the population has a different probability of being selected into the sample. Further, many complex surveys involve stratification and clustering. For generalizability of the sample to the finite population, these features of the design are usually incorporated in the...
Testing for deviations from Hardy-Weinberg equilibrium is a widely recommended practice for population-based genetic association studies. However, current methods for this test assume a simple random sample and may not be appropriate for sample surveys with complex survey designs. In this paper, the authors present a test for Hardy-Weinberg equilibrium that adjusts for the sample weights and co...
While the aged as a group have better access to health care since the inception of Medicare, there are subsets of the population that are still vulnerable to large out-of-pocket expenses. The focus of this analysis is on those segments of the Medicare population which are particularly vulnerable to access problems due to their personal characteristics. In particular, using data from the Nationa...
BACKGROUND This article reports on the use of the 'neighborhood method' to measure the prevalence and basic characteristics of children who became separated from their parents or usual caregivers subsequent to an attack by the M23 militia group in North Kivu, Democratic Republic of the Congo. METHODS A two-stage household cluster survey was conducted in 522 households in North Kivu in August ...
Purpose. The Gudjonsson Suggestibility Scale (GSS; Gudjonsson, 1984, 1997) is a well-established forensic tool for measuring interrogative suggestibility. However, one restriction of this tool is that it requires an extensive testing procedure. The present study examined whether shorter versions of the GSS yield similar results as the original GSS procedure. Methods. One group (N 1⁄4 20) was gi...
Based on recent field survey data collected in three African countries, this study examines interfirm and inter-organizational collaboration in African industry. Three sets of interactions were analyzed namely: firm-firm linkages, including user-supplier and subcontracting relationships; firm-university linkages; and firm-industrial association linkages. Employing univariate and multivariate an...
The Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1) survey is acquiring multi-epoch imaging in five bands (gP1, rP1, iP1, zP1, yP1) over the entire sky north of declination −30◦ (the 3π survey). In 2011 July a test area of about 70 deg2 was observed to the expected final depth of the main survey. In this, the first of a series of papers targeting the galaxy count and cluste...
The Ifo Investment Survey (IS) asks firms in the German manufacturing sector about the importance of technical factors, sales, finance, profit expectations, and macroeconomic policy for their investment activity in a given year. Using the survey responses to these questions, we construct measures of aggregate technology and non-technology shocks to quantify their contributions to aggregate inve...
How do polls influence strategic voting under proportional representation? This paper derives a strategic calculus of voting for coalitions that generates testable predictions about the effects of polls on strategic voting in elections involving four or more parties. Incentives of leftist voters to vote for a centrist over a noncentrist party are shown to increase with the difference in expecte...
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