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Table 3 GRADE assessment for all the outcomes

From: Perioperative outcomes of robotic versus laparoscopic distal gastrectomy for gastric cancer: a meta-analysis of propensity score-matched studies and randomized controlled trials

Outcomes (No. of studies)

Certainty assessment

No. of patients

MD (95% CI) or OR (95% CI)

Risk of bias

Inconsistency

Indirectness

Imprecision

Publication bias

Certainty

Operative time (8)

Seriousa

Not serious

Not serious

Seriousb

None

Low

2763

33.22 [24.32, 42.11]

Blood loss (8)

Seriousa

Not serious

Not serious

Seriousb

None

Low

2763

− 28.56 [− 40.29, − 16.83]

Retrieved lymph nodes (7)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2480

3.46 [2.94, 3.98]

Time to first flatus (6)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2199

− 0.08 [− 0.13, − 0.02]

Time to first liquid intake (5)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2481

− 0.13 [− 0.22, − 0.05]

Time to start soft diet (4)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

1246

− 0.04 [− 0.31, 0.23]

Hospital stays (8)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2763

− 0.21 [− 0.44, 0.01]

Overall complications (8)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2763

0.84 [0.68, 1.04]

Complications I–II (7)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2631

0.91 [0.71, 1.18]

Complications ≥ III (7)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2631

0.70 [0.48, 1.03]

Anastomotic leakage (5)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2449

0.73 [0.29, 1.81]

Bleeding (5)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2429

0.89 [0.46, 1.74]

Intra-abdominal bleeding (3)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

1885

0.54 [0.20, 1.48]

Intraluminal bleeding (3)

Seriousa

Not serious

Not serious

Seriousb

None

Low

1682

0.84 [0.27, 2.64]

Ileus (5)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2429

0.85 [0.39, 1.88]

Abdominal infection (4)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

1985

0.91 [0.38, 2.15]

Delayed gastric emptying (4)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

1033

0.55 [0.18, 1.66]

Wound complications (5)

Seriousa

Not serious

Not serious

Seriousb

None

Low

2429

1.53 [0.77, 3.05]

Pneumonia (5)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

2065

0.66 [0.41, 1.05]

Cardiac complications (4)

Seriousa

Not serious

Not serious

Seriousb

None

Low

1965

1.81 [0.60, 5.43]

Urinary infection (4)

Seriousa

Not serious

Not serious

Not serious

None

Moderate

1965

0.85 [0.27, 2.65]

  1. aThere may be implementation bias and measurement bias
  2. bWide range of 95% confidence intervals were identified