Table 1. Participating sites.

Site	Location	Number of logic statements extracted
Atrius Health	Boston, MA	23,169
Geisinger Health	Danville, PA	24,007
Ochsner Health System	New Orleans, LA	5,961
Oregon Health & Science University	Portland, OR	35,090
Partners HealthCare	Boston, MA	49,524
University of California San Diego	San Diego, CA	42,092
UT Southwestern Medical Center	Dallas, TX	27,447
Vanderbilt University Medical Center	Nashville, TN	29,233
Weill Cornell Medicine	New York, NY	24,175