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Showing 1 to 8 of 8 for “"sample weights"”.
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Modeling Autocorrelation and Sample Weights in Panel Data: A Monte Carlo Simulation Study
… and autoregressive moving average-ARMA) and sample weights present in a longitudinal panel data set. Specifically, to what extent are the sample estimates influenced when autocorrelation (which is usually present in a panel data having correlated observations and errors) and sample weights …
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Methods for analysing complex panel data using multilevel models with an application to the Brazilian labour force survey
… in the social sciences are often obtained by sample surveys with complex designs. These designs usually incorporate a multistage selection from a population with a natural hierarchical structure. In addition, these surveys can also be carried out in a repeated manner including a rotating panel …
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Long-term Benefits of Extracurricular Activities on Socioeconomic Outcomes and Their Trends in 1988-2012
… and logistic regression analyses, by applying sample weights, were performed to examine the impacts of extracurricular activity participation on the aforementioned outcome measures. The implications of the study findings, including the comparison of the results from two different datasets …
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Bycatch in the South African midwater trawl fishery for horse mackerel (Trachurus capensis) as established from observer records
… Small fauna were analysed by extrapolation of sample weights and large fauna were counted. The midwater trawl fishery was estimated to have caught 25 415 t annually, with a bycatch rate of 6.9% of the total catch, by weight. Bycatch species with the highest average annual catches were chub …
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Association of Individual and Combined Metabolic Risk Factors with Cancer
… gender. All analyses incorporated the complex sample design and sample weights to produce national estimates.;Results: Results from the meta-analysis show that metabolic syndrome was modestly associated with an increased risk for breast cancer in adult women. Findings from the study on the …
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Stabilization/solidification of lead contaminated soil using cement incorporated with sugarcane bagasse
… soil was prepared in bulk by mixing soil samples with lead nitrate, Pb (NO3)2 to achieve the concentration of 500 ppm. After that, cement is added at a proportion of 5%, 10% and 15% in sample weights without SCB while in another sample, the cement replaces SCB at a proportion of 2.5%, 5% …
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Stabilisation and solidification of contaminated soil using cement and sugarcane bagasse ash (SCBA)
… added at a proportion of 5%, 10%, 15% and 20% in sample weights without SCBA while in another sample; the cement was replaced by SCBA at a proportion of 2.5%, 5%, 7.5% and 10%. All samples are to be allowed to harden and cured at room temperature for 7, 14 and 28 days. The effectiveness of the …
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Distúrbios do sono na população brasileira: análise dos fatores associados às queixas de redução da função reparadora do sono, insônia, sonolência e suas implicações em morte e eventos cardio-cerebrovasculares
… performed using Cox modeling with inclusion of sample weights in the estimation of the estimates and for the prospective data, Poisson modeling was applied. It was adopted α≤0.05. The study was submitted to the Research Ethics Committee of Hospital Onofre Lopes, receiving opinion 2,048,708. The …