Table 2 Results of a meta-analysis comparing laparoscopic versus open liver resection for colorectal liver metastasis

Operative outcomes

 Operative time

7 ^{9–12,14–16}

LLR = 235, OLR= 289

1.91

-15.92, 19.75

0.83

49

 Blood loss

7 ^9,11–16

LLR = 210, OLR= 367

-173.08

-297.52, -48.64

0.006

83

 Blood transfusions requirement

4 ^10,12,13,15

LLR = 155, OLR= 278

0.35

0.20, 0.64

< 0.001

0

 Overall morbidity

8 ^9–16

LLR = 270, OLR= 427

0.56

0.39, 0.82

0.003

0

 Mortality

8 ^9–16

LLR = 268, OLR= 427

0.69

0.13, 3.75

0.67

0

 Hospital stay

6 ^{9,10,12,14–16}

LLR = 185, OLR= 204

-3.54

-5.12, -1.96

< 0.001

75

Oncologic outcomes

 Negative surgical margin

6 ^{9–11,13,14,16}

LLR = 208, OLR= 347

2.97

1.53, 5.78

0.001

0

 Recurrence

3^10,11,15

LLR = 150, OLR = 185

0.68

0.41, 1.14

0.14

0

 5-year overall survival

4 ^10,12–14

LLR = 135, OLR= 258

1.33

0.86, 2.07

0.20

41

 5-year disease-free survival

4 ^10,12–14

LLR = 135, OLR= 258

1.48

0.89, 2.44

0.13

45