Table 1.
Baseline characteristics of individual studies
| Ref. | Study design | Colon and/or rectal | No. patients |
Conversion (%) |
Men (%) |
Age (yr) |
BMI (kg/m2) |
|||||
| Overall | Colon resection | Rectal resection | LAP | CONV | LAP | CONV | LAP | CONV | ||||
| Allaix et al[13] | Retrospective | Both | 1114 | 122 (10.9) | 77 (10.7) | 45 (11.4) | 530 (53.4) | 69 (56.6) | 67.01 | 68.0 | 23.0 | 24.0 |
| Agha et al[14] | Retrospective | Rectal | 300 | 26 (8.6) | NA | 26 (8.6) | 166 (60.5)1 | 21 (80.7) | 64.7 | 64.5 | 26.21 | 29.0 |
| Biondi et al[12] | Prospective | Both | 207 | 33 (15.9) | 14 (42.4) | 19 (57.6) | 102 (58.6) | 23 (69.7) | 65.5 | 66.8 | NR | NR |
| Bouvet et al[15] | Prospective | Both | 91 | 38 (41.1) | NR | NR | 30 (56,6) | 25 (65.8) | 65.0 | 67.0 | NR | NR |
| Chan et al[16] | Prospective | Both | 470 | 41 (8.7) | NR (12.3) | NR (7.2) | 238 (55.5)1 | 30 (73.2) | 69.0 | 69.1 | NR | NR |
| Franko et al[21] | Prospective | Both | 174 | 31 (17.8) | NR | NR | 73 (51.0) | 21 (51.2) | 70.0 | 69.0 | NR | NR |
| Keller et al[22] | Prospective | Rectal | 141 | 25 (17.7) | NA | 25 (17.7) | 63 (54.3) | 17 (68.0) | 63.1 | 63.5 | 28.7 | 27.5 |
| Li et al[23] | Retrospective | Colon | 217 | 33 (15.2) | 33 (15.2) | NA | 94 (51.1) | 20 (60.7) | 62.6 | 62.9 | 25.6 | 24.5 |
| Martínek et al[17] | Prospective | Both | 243 | 17 (7.0) | 10 (6.3) | 7 (8.2) | 146 (64.6) | 13 (76.5) | 64.5 | 62.8 | 26.7 | 28.4 |
| Moloo et al[24] | Prospective | Both | 359 | 46 (12.8) | NR | NR | 171 (54.6) | 25 (54.3) | 65.0 | 65.0 | NR | NR |
| Ptok et al[25] | Prospective | Colon | 346 | 56 (16.2) | 56 (16.2) | NA | NR | NR | 66.5 | 68.9 | NR | NR |
| Rickert et al[26] | Prospective | Rectal | 162 | 38 (23.5) | NA | 38 (23.5) | 69 (55.7) | 27 (71.0) | 63.01 | 69.0 | 25.1 | 25.8 |
| Rottoli et al[20] | Prospective | Rectal | 173 | 26 (15.0) | NA | 26 (15.0) | NR | NR | 63.2 | 64.3 | 24.91 | 27.3 |
| Rottoli et al[27] | Prospective2 | Both | 93 | 31 (NA) | NR | NR | 37 (59.7) | 24 (77.4) | 72.0 | 72.0 | 26.81 | 29.6 |
| Scheidbach et al[18] | Retrospective | Both | 1409 | 80 (5.7) | 41 (8.2) | 39 (6.4) | 658 (49.5) | 46 (57.5) | 68.9 | 69.7 | 25.21 | 26.4 |
| White et al[19] | Prospective | Both | 175 | 25 (14.3) | NR | NR | 70 (46.7) | 11 (44.0) | 69.7 | 74.4 | 27.2 | 26.9 |
| Yamamoto et al[28] | Prospective | Rectal | 1073 | 78 (7.3) | NA | 78 (7.3) | 625 (62.8) | 48 (61.5) | 62.9 | 63.8 | 22.71 | 24.6 |
| Yerokun et al[29] | Retrospective | Colon | 46472 | 6144 (13.2) | 6144 (13.2) | NA | 19738 (48.9)1 | 3308 (53.8) | 70.01 | 69.0 | NR | NR |
1
P value of difference between overall LAP and CONV is < 0.05;
2
Case-control study. BMI: Body mass index; NR: Not reported; NA: Not applicable; LAP: Laparoscopic group; CONV: Converted group.