Size of sampling unit

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  • The International Biological Programme (IPB), a world-wide plan of coordinated research on the biological basis of productivity and human welfare, covered terrestrial and aquatic environments, and ran for almost a decade from 1964. Recognising the need for guidance in methodology, the IBP arranged for the publication of a series of handbooks on techniques with the aim of achieving comparability of results all over theworld. One of these handbooks dealt with the study of marine benthos.

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  • The survey methodology is that used for the Gallup World Poll. Surveys are conducted face to face in economies where telephone coverage represents less than 80 percent of the population. In most economies the fieldwork is completed in two to four weeks. In economies where face-to-face surveys are conducted, the first stage of sampling is the identification of primary sampling units, consisting of clusters of households. The pri- mary sampling units are stratified by population size, geography, or both, and clustering is achieved through one or more stages of sampling.

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  • Health and Quality of Life Outcomes BioMed Central Research Open Access Sample size and power estimation for studies with health related quality of life outcomes: a comparison of four methods using the SF-36 Stephen J Walters* Address: Sheffield Health Economics Group, School of Health and Related Research, University of Sheffield, Regent Court, 30 Regent St, Sheffield, United Kingdom, S1 4DA Email: Stephen J Walters* - s.j.walters@shef.ac.uk * Corresponding author Published: 25 May 2004 Health and Quality of Life Outcomes 2004, 2:26 This article is available from: http://www.hqlo.

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  • The controls included in the ordered probits are chosen to match those used by CSW, and include age and year dummies, indicators for the child’s sex and ethnicity, the logarithm of family size, the age of each of the parents, and indicators for whether the mother and father were absent from the household. 1 We do not know if CSW weighted their regressions using the sampling weights provided in the survey. All the results we show use weights, although their use makes very little difference to any of the estimates. Panel A contains results from the HSE. We first...

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  • The tables used in the main body of the following discus- sion are based on the entire sample, comprising 1,468 good loans and 1,297 bad loans. But in these summary tabulations, which represent a combination of the samples of all banks, the separate distributions of good and of bad loans for each bank have been so weighted that the combined sample may be considered to comprise 1,294 good loans and the same number of bad loans.

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