Impact of surgical vs medical management on histologic outcomes in Barrett’s esophagus: A meta-analysis

Table 1 Quality assessment of the included studies

Ref.	Country	Type of study	Cases (patients)	Selection (1-4)	Comparability (5)	Outcomes (6-8)	Total score	Assessment
Gurski et al[24]	United States	Retrospective	91; 77 ST (Nissen 61, Collis 14, Toupet 2); 14 MT	4	1	2	7	High
Rossi et al[26]	Italy	Prospective	35; 16 ST (Nissen); 19 MT	4	1	2	7	High
Zaninotto et al[18]	Italy	Prospective	89; 45 ST (43 Nissen, 1 Collis, 1 Toupet); 44 MT	4	1	2	7	High
Tolone et al[27]	Italy	Prospective	62; 37 ST (Nissen); 25 MT	4	1	2	7	High
Markar et al[25]	England	Retrospective	786; 166 ST; 620 MT	4	2	3	9	High
Szachnowicz et al[5]	Brazil	Prospective	398; 190 ST (Nissen); 207 MT	4	2	2	8	High

Numbers indicate the Newcastle-Ottawa Scale items fulfilled by each study: 1-4 correspond to the selection domain, 5 to the comparability domain, and 6-8 to the outcome domain. Higher total scores indicate better methodological quality. MT: Medical therapy; ST: Surgical treatment.