Study, year | Country | Study period | Study design | Criteria | Matched factorsb | No. of participants (MH, %) | Age, Mean (SD), y | Female, No. (%) | Quality score | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inclusion | Exclusiona | ||||||||||||
Lap | Open | Lap | Open | Lap | Open | ||||||||
Ma et al. [23], 2018 | China | 2014–2017 | PSM (R, S) | Primary CRC and SCRLM | 1–3 | 1–3, 5, 7, 11, 12, 15–17, 21, 22,24–26 | 12 (25) | 12 (33) | 3c (25) | 1c (8) | 3 (25) | 4 (33) | 8 |
Ivanecz et al [20], .2018 | Slovenia | 2000–2016 | PSM (P, S) | Primary CRC and SCRLM | 4–6 | 1–3, 5, 7, 10–12, 15, 20–27 | 10 (0) | 10 (0) | 62 (8) | 65 (8) | 4 (40) | 4 (40) | 8 |
Xu et al. [26], 2017 | China | 2009–2014 | PSM (R, S) | Primary CRC and SCRLM | 5, 7 | 1–3, 5–7, 9, 10, 12, 15–17, 20–22,24– 26, 28 | 20 (25) | 20 (20) | 58 (11) | 60 (11) | 7 (35) | 6 (30) | 8 |
Chen et al [16], .2018 | Taiwan, China | 2009–2017 | NM (R, S) | Primary CRC and SCRLM | 2, 6, 8–11 | 1, 2, 7, 11–13, 15, 17, 20, 21, 24, 25, 28, 29 | 16 (19) | 22 (14) | 66 (10) | 65 (13) | 6 (38) | 13 (59) | 6 |
Gorgun et al [17], .2017 | USA | 2006–2015 | NM (P, S) | Primary CRC and SCRLM | NR | 1, 2, 3, 7, 9–12, 15, 16, 18, 21, 22,24– 26, 28, 29 | 14 (14) | 29 (14) | 56 (3) | 58 (3) | 8 (57) | 13 (45) | 6 |
Ratti et al [24], .2016 | Italy | 2004–2015 | PSM (P, S) | Primary CRC and SCRLM | 4, 12, 13 | 1–3, 5, 10, 12, 16– 18, 20–22, 24–26, 28, 29 | 25 (24) | 50 (20) | 60 (11) | 61 (10) | 11 (44) | 23 (46) | 8 |
Tranchart et al [25], .2016 | France | 1997–2013 | PSM (R, M) | Liver lesions ≤ 5 cm with segments II– VI | 14 | 1, 2, 7, 10–12, 14, 16, 20, 21,24–26, 28,29 | 89 (8) | 89 (6) | 67 (11) | 65 (9) | 47 (53) | 49 (55) | 8 |
Lin et al [22], .2015 | China | 2008–2012 | PSM (P, S) | Primary CRC and SCRLM | 15–18 | 1–3, 5, 7–16, 20, 21, 24–26, 28 | 7 (0) | 36 (17) | 60 (3) | 57 (10) | 2 (29) | 15 (58) | 8 |
Jung et al [21], .2013 | Korea | 2008–2012 | CM (P, S) | Primary CRC and SCRLM | 5, 19 | 1, 2, 7, 9–12, 16, 19– 21, 24, 25, 27, 28 | 24 (25) | 24 (25) | 60 (43–75) | 60 (37–80) | 11 (46) | 7 (29) | 6 |
Hu et al. [18], 2012 | China | 2004–2008 | CM (R, M) | Metastasis restricted to the left lobe or a segment in the right lobe with size < 6 cm | 6, 20, 21, 22 | 1, 2, 7, 8, 10, 11, 15, 17–19, 28 | 13 (15) | 13 (15) | 54 (10) | 53 (11) | 3 (23) | 4 (31) | 8 |
Huh et al [19], .2011 | Korea | 2003–2008 | CM (P, S) | Primary CRC and SCRLM | NR | 1–3, 5, 7, 9–16, 25, 28 | 20d (NR) | 20 (NR) | 63 (36– 71) | 62 (44–85) | 7 (35) | 5 (25) | 8 |
Chen et al [15], .2011 | China | 1999–2005 | CM (R, S) | Rectal tumor fit for Dixon’s surgery and the number of liver lesions ≤ 2 | 21, 23, 24 | 1–10, 13–16 | 23 (26) | 18 (NR) | 55 (10) | 53 (9) | 5 (22) | 4 (22) | 8 |