Laparoscopy-Assisted versus Open Hepatectomy for Live Liver Donor: Systematic Review and Meta-Analysis

Table 2

Quality assessment based on the NOS for observational studies.

Author	Matched factors	Selection (out of 4)				Comparability (out of 2)	Outcomes (out of 3)			Total (out of 9)
		①	②	③	④		⑤	⑥	⑦
Baker et al. [8]	abcdef									7
Thenappan et al. [9]	abcdef									7
Choi et al. [10]	abcdefghijkl									7
Marubashi et al. [11]	—									8
Makki et al. [12]	abcd									6
Soyama et al. [13]	abcd									7
Suh et al. [14]	—									8
Shen et al. [15]	abcd									7
Kitajima et al. [5]	—									7

Factors matched between groups: a: age; b: gender; c: body mass index; d: hepatic artery anomalies; e: portal vein anomalies; f: biliary anomalies; g: ALT; h: AST; i: hemoglobin; j: prothrombin time prothrombin time; k: prothrombin rate; l: international normalized ratio.