This is a preview. Log in through your library . Abstract Background: Current methodology for multidrug-resistant tuberculosis (MDR TB) surveys endorsed by the World Health Organization provides ...

One possible explanation for the variability in estimates across the different nonprobability samples is the range of methods that online sample vendors employ. They differ on recruitment, weighting ...

The USDA’s Agricultural Research Service (ARS), the University of Nebraska–Lincoln (UNL), and the ARS’s Partnership for Data Innovations (PDI) have launched a new web-based application to facilitate ...

Greg DePersio has 13+ years of professional experience in sales and SEO and 3+ years as a writer and editor. Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of ...