Clinical Effect of Preservation or Nonpreservation of Left Colic Artery in Total Mesorectal Excision under Laparoscopy: A Meta-analysis

Table 1

Characteristics of included studies.

Study	Year	Country	Adequate sequence generation	Allocation concealment	Blinding	Incomplete outcome data addressed	Free of selective reporting	Free of other biases
Hinoi et al. [7]	2013	Japan	Yes	Yes	Yes	Yes	Yes	No
Zang et al. [8]	2016	China	Unclear	Yes	Yes	Yes	Yes	No
You et al. [9]	2017	China	Unclear	Unclear	Yes	Yes	Yes	No
Zhu et al. [10]	2016	China	Yes	Unclear	Yes	Yes	Yes	No
Zhang and Zhang [11]	2017	China	Yes	Unclear	Yes	Yes	Yes	No
Lv et al. [12]	2014	China	Yes	Unclear	Yes	Yes	Yes	Unclear
Chi et al. [13]	2017	China	Yes	Yes	Yes	Yes	Yes	No