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. 2019 Jul 3;9:597. doi: 10.3389/fonc.2019.00597

Table 5.

Sensitivity analysis of endpoints of interests.

Endpoints (references) No. of patients No. of trials NOSE CL OR or WMD (95%CI) P-value I2 (%) P value for heterogeneity
LYMPH NODE HARVEST
All included trails (4, 10, 11, 16, 26, 29, 30) 727 7 295 432 −0.97 (−1.97 to 0.03) 0.06 0 0.76
BMI ≤ 30 (kg/m2) (4, 11, 16, 26, 29, 30) 687 6 275 412 −0.87 (−1.89 to 0.16) 0.10 0 0.77
Sample number >30 (11, 16, 26, 29) 569 4 239 330 −0.59 (−1.99 to 0.80) 0.41 0 0.64
Non-RCT (NOS ≥ 6) (4, 10, 11, 16, 26, 29) 679 6 279 400 −0.71 (−1.98 to 0.56) 0.27 0 0.71
Prospective trials (16, 29, 30) 232 3 108 124 −1.11 (−2.59 to 0.38) 0.14 0 0.53
TOTAL PERIOPERATIVE COMPLICATIONS
All included trails (4, 5, 911, 16, 2429) 1,317 12 609 708 0.56 (0.41 to 0.75) <0.001 15 0.30
BMI ≤ 30 (kg/m2) (4, 5, 11, 16, 24, 26, 27, 29) 1,001 8 440 561 0.50 (0.34 to 0.74) <0.001 0 0.52
Sample number > 30 (5, 11, 16, 25, 26, 29) 1,065 6 499 566 0.57 (0.41 to 0.79) <0.001 0 0.59
Non-RCT (NOS ≥ 6) (4, 5, 911, 16, 25, 26, 28, 29) 1,231 10 566 665 0.57 (0.42 to 0.78) <0.001 11 0.34
Prospective trials (5, 9, 16, 24, 29) 526 5 267 259 0.58 (0.36 to 0.93) 0.03 0 0.41
ANASTOMOTIC LEAKAGE
All included trails (5, 9, 11, 26, 27, 29) 819 6 383 436 0.71 (0.36 to 1.38) 0.31 0 0.96
BMI ≤ 30 (kg/m2) (5, 11, 26, 27, 29) 793 5 366 427 0.68 (0.34 to 1.34) 0.26 0 0.95
Sample number > 30 (5, 11, 26, 29) 747 4 343 404 0.70 (0.35 to 1.42) 0.33 0 0.92
Non-RCT (NOS ≥ 6) (5, 9, 11, 26, 29) 773 5 360 413 0.73 (0.37 to 1.46) 0.38 0 0.94
Prospective trials (5, 29) 392 2 196 196 0.75 (0.31 to 1.78) 0.51 0 0.60
SURGICAL SITE INFECTION
All included trails (4, 5, 10, 12, 26, 29, 30) 808 7 369 439 0.15 (0.05 to 0.42) <0.001 0 0.99
BMI ≤ 30 (kg/m2) (4, 5, 12, 26, 29, 30) 768 6 349 419 0.14 (0.04 to 0.42) <0.001 0 0.99
Sample number > 30 (5, 12, 26, 29) 650 4 313 337 0.12 (0.03 to 0.45) 0.002 0 1.00
Non-RCT (NOS ≥ 6) (4, 5, 10, 26, 29) 690 5 318 372 0.14 (0.04 to 0.47) 0.001 0 0.99
Prospective trials (5, 12, 29, 30) 510 4 247 263 0.14 (0.04 to 0.53) 0.004 0 0.93
OPERATION TIME
All included trails (4, 5, 912, 16, 2630) 1,175 12 518 657 17.34 (6.14 to 28.54) 0.002 81 <0.001
BMI ≤ 30 (kg/m2) (4, 5, 11, 12, 16, 26, 27, 29, 30) 1,079 9 471 608 13.17 (1.86 to 24.47) 0.02 80 <0.001
Sample number > 30 (5, 11, 12, 16, 26, 29) 915 6 412 503 11.08 (0.46 to 21.70) 0.04 72 0.003
Non-RCT (NOS ≥ 6) (4, 5, 911, 16, 26, 28, 29) 1,011 9 444 567 14.84 (1.04 to 28.63) 0.03 81 <0.001
Prospective trials (5, 9, 12, 16, 29, 30) 604 6 298 306 17.36 (11.43 to 23.28) <0.001 0 0.65
HOSPITAL STAY
All included trails (4, 5, 912, 16, 2630) 1,175 12 518 657 −0.56 (−1.09 to −0.04) 0.03 54 0.01
BMI ≤ 30 (kg/m2) (4, 5, 11, 12, 16, 26, 27, 29, 30) 1,079 9 471 608 −0.71 (−1.19 to −0.23) 0.004 51 0.04
Sample number > 30 (5, 11, 12, 16, 26, 29) 915 6 412 503 −0.84 (−1.16 to −0.53) <0.001 43 0.12
Non-RCT (NOS ≥ 6) (4, 5, 911, 16, 26, 28, 29) 1,011 9 444 567 −0.88 (−1.21 to −0.56) <0.001 41 0.09
Prospective trials (5, 9, 12, 16, 29, 30) 604 6 298 306 −0.57 (−1.35 to 0.20) 0.15 62 0.02

NOSE, natural orifice specimen extraction; CL, conventional laparoscopic surgery; OR, odds ratio; WMD, weighted mean difference; 95%CI; 95% confidence interval; BMI, body mass index.