Laparoscopic gastrectomy versus open gastrectomy for elderly patients with gastric cancer: a systematic review and meta-analysis

Table 1 Characteristics of included studies

Study	Period	Country	Sample size	Gender		Age		BMI		Comorbidity		Age cutoff point	Comparability of baseline characteristics
Study	Period	Country	Sample size	LG	OG	LG	OG	LG	OG	LG	OG	Age cutoff point	Comparability of baseline characteristics
Yasuda	1994–2003	Japan	73	26/19	17/11	75.7	77.2	NR	NR	55.60 %	67.90 %	70	abdfi
Mochiki	1998–2004	Japan	46	20/10	14/2	75.2	74.3	NR	NR	43.00 %	25.00 %	70	abdei
Meng	2007–2009	China	225	88/28	107/32	71.4	71.5	21.9	22.3	49.10 %	54 %	65	abcdefghi
Hu	2007–2012	China	233	74/35	83/41	72.4	71.8	NR	NR	51.40 %	54.80 %	65	abdefgh
Li	2008–2009	China	108	36/18	30/24	78.6	76.5	NR	NR	85.20 %	81.50 %	70	abdg
Qiu	2012–2013	China	64	25/5	22/12	74.4	75.6	21.6	21.6	NR	NR	70	abcdefgh
Suzuki	2000–2011	Japan	66	28/10	18/10	78.5	77	22.5	23	73.70 %	85.70 %	75	abcdgi

BMI body mass index, LG laparoscopic gastrectomy, OG open gastrectomy, NR not reported, a gender, b age, c BMI, d comorbidity, e tumor size, f tumor location, g tumor stage, h type of gastrectomy, i type of anastomosis

ISSN: 1477-7819