Progression from low-grade dysplasia to malignancy in patients with Barrett's esophagus diagnosed by two or more pathologists

Table 1 Basic characteristics of the included studies

Ref.	Country	Type	Age: years - Median	Sex: Male%	N LGD - prior to panel review	Follow up - median - months	Follow up - Patient years	N LGD (after panel review) consensus diagnosis	N HGD (after panel review) consensus diagnosis
Picardo et al[27] 2015	Ireland	R	59	67%	NA	50	354.17	85	60
Duits et al[28] 2014	Netherlands	R	63	76%	293	39	256.75	79	NA
von Rahden et al[29] 2008	Germany	R	59	72%	NA	24	114.00	57	NA
Lim et al[30] 2007	United Kingdom	R	67	80%	34	96	112.00	14	1
Vieth et al[31] 2006	Germany	R	61	68%	NA	54	85.50	19	10
Basu et al[32] 2004	United Kingdom	R	74	74%	16	60	50.00	10	3
Montgomery et al[33] 2001	United States	R	65	72%	26	24	30.00	15	15
Skacel et al[34] 2000	United States	R	67	84%	25	26	36.83	17	NA
Younes et al[35] 2011	United States	P	NA	NA	NA	35	81.67	28	NA
Wani et al[10] 2011	United States	P	61	85%	210	74	252.83	41	NA
Curvers et al[36] 2010	Netherlands	P	59	67%	147	51	93.50	22	NA
Srivastava et al[37] 2007	United States	P	64	91%	NA	25	64.58	31	46

R: Retrospective; P: Prospective; NA: Not available.