Validating National Kriging Exposure Estimation
نویسندگان
چکیده
منابع مشابه
Validating National Kriging Exposure Estimation
In their article Liao et al. (2006) argued that it is feasible to use national scale daily kriging to estimate ambient air pollution exposure, even in locations where monitoring data are limited. In addition, they argued that national scale kriging is preferable to regional kriging and that automated variogram estimation is preferable to manual. The advocated methodology seems appealing when co...
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Retrospective studies of disease often are limited by the resolution of the exposure measurements. For example, in a typical study of adverse health effects from contaminated groundwater, the number of wells sampled may range from only a few to as many as several dozen, while the number of cases and controls may be in the hundreds or more. To derive individual estimates of exposure for wells th...
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A method for fitting regression models to data that exhibit spatial correlation and heteroskedasticity is proposed. It is well known that ignoring a nonconstant variance does not bias least-squares estimates of regression parameters; thus, data analysts are easily lead to the false belief that moderate heteroskedasticity can generally be ignored. Unfortunately, ignoring nonconstant variance whe...
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The aim of the paper is to derive the brand-new estimator for mean and variance that has only numerical approximation. In order to do so the following questions have to be answered: (i) what is the statistical model for the estimation procedure? (ii) what are the properties of the estimator, like optimality (in which class) or asymptotic properties? (iii) how does the estimator work in practice...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2007
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.10205