Psychiatric boarding incidence, duration, and associated factors in United States emergency departments.

Introduction: Boarding, especially among psychiatric patients, has been characterized as a significant cause of ED crowding, but no quantitative analysis has described boarding nationally. This study determines the incidence, duration, and factors associated with ED boarding in the United States.

Methods: 2008 National Hospital Ambulatory Medical Care Survey ED data were stratified by visit type (psychiatric vs.

Regioselective Sonogashira couplings of 2,4-dibromoquinolines. A correction.

Heteronuclear multiple bond correlation (HMBC) was used to determine the regiochemical outcome of palladium-catalyzed carbon-carbon bond formation between 2,4-dibromoquinolines and terminal acetylenes. The observed regioselectivity of these coupling reactions is opposite to that reported in the literature for analogous reactions.