Table 1. Baseline Clinical and Endoscopic Characteristics of 93 Patients Included from the SURF Trial and 63 Patients included from the AIM Dysplasia Trial.

Mean (SD) / N (%)	AIM Dysplasia	SURF	Pooled
Age	66.5 (9.5)	64.1 (7.9)	65.1 (8.7)
Male sex	54 (84%)	78 (84%)	132 (84%)
BMI (mg/k2)	29.5 (5.7)	27.3 (4.1)	28.2 (5.0)
Low grade dysplasia	35 (55%)	93 (100%)	128 (82%)
High grade dysplasia	29 (45%)	0 (0%)	29 (18%)
Prague M Length (cm)	4.4 (3.0)	5.6 (3.2)	5.0 (3.1)
Prague C Length (cm)	3.1 (2.7)	3.7 (3.8)	3.5 (3.4)
Hiatal Hernia (cm)	3.4 (1.7)	2.8 (1.6)	3.2 (1.7)
Caucasian	61 (95%)	90 (97%)	151 (96%)
African American	2 (3%)	0 (0%)	2 (1%)
Hispanic	1 (2%)	0 (0%)	1 (1%)
Unknown	0 (0%)	3 (3%)	3 (2%)