Observational studies are often in peril of unmeasured confounding. Instrumental variable analysis is a method for controlling for unmeasured confounding. As yet, theory on instrumental variable ...

World Trade Center building performance study : data collection, preliminary observations, and recommendations / [report editor, Therese McAllister : chapter leaders and authors, Gene Corley [and ...

The Midwestern Regional Climate Center (MRCC) recently launched a searchable, downloadable archive of 19th-century weather ...