Systematic review of laparoscopic vs open surgery for colorectal cancer in elderly patients

Table 1 Characteristics of studies

Ref.	Year	Study type	Age	Age		Patient	No. of LAC	No. of OC	Convert (%)	ASA (1-2/3-4)		Gender (M/F)		NOS
				LAC	OC					LAC	OC	LAC	OC
Sklow et al[23]	2003	Case-matched	76	81.4 ± 0.83	81.8 ± 0.91	All cancer	39	39		19/20	10/29	22/17	21/18	6
Vignali et al[24]	2005	Case-matched	80	82.3 ± 2.3	83.1 ± 3.1	All cancer	61	61	4 (6.6)	2.5 ± 0.1	2.6 ± 0.6	29/32	29/32	6
Feng et al[25]	2006	Retro, comparative	71	77.8 ± 5.1	76.9 ± 6.1	All cancer	51	102	2 (3.9)					5
Tei et al[26]	2009	Retro, comparative	71	75.5 (71-89)	76.0 (71-93)	All cancer	51	78	3 (5.9)	Apr-37	63/15	32/19	43/35	6
Akiyoshi et al[27]	2009	Retro, comparative	75	79 (75-90)	79 (75-86)	Rectal cancer	44	43	0 (0)	Jun-38	Jul-36	21/23	23/20	3
Tomimaru et al[28]	2011	Retro, comparative	76	82.0 ± 4.6	81.9 ± 5.7	Colon cancer	36	15	5 (13.9)	20/16	8/7	13/23	7/8	8
Robinson et al[29]	2011	Retro, comparative	65	74 (65-86 )	75 (65-91 )	All cancer	47	195		1/46	9/162	47/0	191/4	8
She et al[30]	2013	Retro, comparative	75	80 (75-94)	80 (75-95)	All cancer	189	245	9 (4.8)	122/66	134/101	90/99	120/125	6
Scarpa et al[31]	2013	Retro, comparative	70	77 (74-80)	75 (72-80)	All cancer	33	24				14/19	8/16	6
Fujii et al[19]	2014	RCT	75	79.8 ± 3.6	80.1 ± 4.2	All cancer	100	100	3 (3)	Sep-91	85/15	50/50	60/40	NA
Hinoi et al[32]	2014	Retro, comparative	80	83 (81-85)	83 (81-85)	All cancer	459	459		362/107	355/104	215/244	222/237	8
Miyasaka et al[33]	2014	Retro, comparative	70	75 (70-86)	78 (70-94)	All cancer	28	79		6/22	48/31	13/15	27/52	6
Vallribera Valls et al[34]	2014	Prospective, comparative	75			All cancer	134	133		59/75	71/62	88/46	88/45	8
Zeng et al[35]	2015	Retro, comparative	70	74 (70-87)	74 (70-88)	Rectal cancer	112	182	7 (6.3)	66/46	92/90	62/50	98/84	6
Shigeta et al[36]	2015	Retro, comparative	80	82 (81-84)	83 (81-87)	All cancer	52	55	0 (0)	Apr-48	Apr-81	28/24	26/29	7

LAC: Laparoscopic surgery; OC: Open surgery; NOS: Newcastle-Ottawa scale stars.