Roux-en-Y versus Billroth I reconstruction after distal gastrectomy for gastric cancer: A meta-analysis

Table 2 Newcastle-Ottawa scoring system for nonrandomized comparative studies

Ref.	Selection star	Comparability star1	Outcome star	Total star
Osugi et al[9]	3	2	3	8
Shinoto et al[10]	3	2	3	8
Nunobe et al[13]	4	2	3	9
Fukuhara et al[14]	3	2	3	8
Kojima et al[21]	3	2	3	8
Namikawa et al[22]	3	2	2	7
Tanaka et al[23]	3	2	3	8
Kumagai et al[24]	3	2	1	6
Kim et al[25]	3	2	2	7

¹Factors considered: Age, gender; American Society of Anesthesiologists grading and tumor stage.