Comparing the power of three different sampling patterns with the low-prevalence, high-level profile. The probability of detection is shown at 2.5th–97.5th percentile. The line with dots shows the ...

Objective: To study the predictive power of serum selenium with regard to cancer mortality in a large sample of the Belgian population given the lack of coherence in the results of observational ...

Producers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study from the University of Illinois Urbana-Champaign finds ...

In sample surveys estimates are often required for subclasses of the population. The usual results assume that the domain numbers, M i, are either known exactly or completely unknown. The case where ...

This is the description of the sample plan for a survey of enrollments by mail questionnaire of 1800 colleges and universities in the United States. The requirements of the survey included speed, ...

Survey data in this report are based on Pew Research Center surveys conducted with a nationally representative sample of Hispanics. Differences between groups or subgroups, such as foreign-born and ...