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Study flow diagram.
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Figure 1

Study flow diagram.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
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Figure 2

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
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Figure 3

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 1 Short‐term mortality.
Figuras y tablas -
Analysis 1.1

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 1 Short‐term mortality.

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 2 Serious adverse events (proportion).
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Analysis 1.2

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 2 Serious adverse events (proportion).

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 3 Serious adverse events (number).
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Analysis 1.3

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 3 Serious adverse events (number).

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 4 Health‐related quality of life.
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Analysis 1.4

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 4 Health‐related quality of life.

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 5 Mild adverse events (proportion).
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Analysis 1.5

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 5 Mild adverse events (proportion).

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 6 Mild adverse events (number).
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Analysis 1.6

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 6 Mild adverse events (number).

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 7 Length of hospital stay.
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Analysis 1.7

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 7 Length of hospital stay.

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 8 Readmissions.
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Analysis 1.8

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 8 Readmissions.

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 9 Costs.
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Analysis 1.9

Comparison 1 Enhanced recovery protocol versus standard care, Outcome 9 Costs.

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 1 Short‐term mortality.
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Analysis 2.1

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 1 Short‐term mortality.

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 2 Serious adverse events (proportion).
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Analysis 2.2

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 2 Serious adverse events (proportion).

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 3 Serious adverse events (number).
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Analysis 2.3

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 3 Serious adverse events (number).

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 4 Health‐related quality of life.
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Analysis 2.4

Comparison 2 Enhanced recovery protocol versus standard care (subgroup analysis), Outcome 4 Health‐related quality of life.

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 1 Health‐related quality of life.
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Analysis 3.1

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 1 Health‐related quality of life.

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 2 Length of hospital stay.
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Analysis 3.2

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 2 Length of hospital stay.

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 3 Costs.
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Analysis 3.3

Comparison 3 Enhanced recovery protocol versus standard care (sensitivity analysis), Outcome 3 Costs.

Summary of findings for the main comparison. Enhanced recovery protocol versus standard care for major upper gastrointestinal, liver and pancreatic surgery

Enhanced recovery protocols versus standard care for major upper gastrointestinal, liver and pancreatic surgery

Patient or population: people with major upper gastrointestinal, liver and pancreatic surgery
Settings: secondary or tertiary care
Intervention: enhanced recovery protocol

Control: standard care

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Control

Enhanced recovery protocol versus standard care

None of the trials reported long‐term mortality, medium‐term health‐related quality of life (3 months to 1 year), time to return to normal activity, or time to return to work.

Short‐term mortality

2 per 1000

6 per 1000
(1 to 40)

RR 2.79
(0.44 to 17.73)

868
(7 studies)

⊕⊝⊝⊝
very low1,2,3

Serious adverse events (proportion)

1 per 1000

6 per 1000
(1 to 46)

RR 5.57

(0.68 to 45.89)

341
(2 studies)

⊕⊝⊝⊝
very low1,2,3

Since there were no serious adverse events in the control group (in the two trials that reported the proportion of participants with serious adverse events), the control group risk was stated as 0.1% for this outcome alone

Serious adverse events (number)

105 per 1000

76 per 1000
(47 to 119)

Rate ratio 0.72
(0.45 to 1.13)

859
(7 studies)

⊕⊝⊝⊝
very low1,2,3

Health‐related quality of life (until 3 months)

The mean health‐related quality of life in the intervention groups was
0.29 standard deviations higher
(0.04 lower to 0.62 higher)

373
(4 studies)

very low1,4

SMD 0.29 (‐0.04 to 0.62)

Mild adverse events (proportion)

188 per 1000

109 per 1000
(73 to 160)

RR 0.58
(0.39 to 0.85)

525
(4 studies)

⊕⊕⊝⊝
low1

Mild adverse events (number)

249 per 1000

129 per 1000
(97 to 174)

Rate ratio 0.52
(0.39 to 0.70)

1014
(9 studies)

⊕⊕⊝⊝
low1

Length of hospital stay

The mean length of hospital stay in the control groups was
8 days

The mean length of hospital stay in the intervention groups was
2.19 lower
(2.53 to 1.85 lower)

1014
(9 studies)

⊕⊕⊝⊝
low1

The length of hospital stay reported in the trials included only the length of hospital stay during the admission for surgery and does not include the readmissions

Readmissions

24 per 1000

33 per 1000
(16 to 68)

RR 1.4
(0.69 to 2.87)

733
(7 studies)

⊕⊝⊝⊝
very low1,2,3

Costs

The mean costs in the control groups were
USD 7000

The mean costs in the intervention groups were
0.63 lower
(0.84 to 0.42 lower)

282
(4 studies)

⊕⊕⊝⊝
low1

*The basis for the assumed risk is the mean control group risk. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio;

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1 The risk of bias was high in all the trials.
2 The confidence intervals were wide (overlaps 0 and 0.75 or 1.25).
3 The total sample size was less than the sample required in a single trial.
4 The confidence intervals were wide (overlaps 0 and 0.25 or ‐0.25).

Figuras y tablas -
Summary of findings for the main comparison. Enhanced recovery protocol versus standard care for major upper gastrointestinal, liver and pancreatic surgery
Table 1. Participants, elements of enhanced recovery protocol and outcomes reported in included trials

Study name

Surgery

Preoperative education

Pain relief protocol

Early mobilisation protocol

Nutritional protocol

Growth factors

Outcomes reported

Barlow 2011

Major upper gastrointestinal surgery (oesophagectomy, gastrectomy and pancreatectomy)

No

No

No

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Mild adverse events

  4. Length of hospital stay

Jones 2013

Open liver surgery

Yes

No

Yes

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Health‐related quality of life

  4. Mild adverse events

  5. Length of hospital stay

  6. Readmissions

Kim 2012

Laparoscopic distal gastrectomy

Yes

Yes

Yes

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Health‐related quality of life

  4. Mild adverse events

  5. Length of hospital stay

  6. Readmissions

  7. Costs

Lemanu 2013

Laparoscopic sleeve gastrectomy

Yes

Yes

Yes

Yes

No

  1. Serious adverse events

  2. Health‐related quality of life

  3. Mild adverse events

  4. Length of hospital stay

  5. Readmissions

  6. Costs

Liu 2010

Gastrectomy

Yes

Yes

Yes

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Mild adverse events

  4. Length of hospital stay

  5. Readmissions

Lu 2014

Liver surgery

No

No

Yes

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Mild adverse events

  4. Length of hospital stay

  5. Readmissions

Miyachi 2013

Gastrectomy

No

No

No

No

Yes

None of the outcomes of interest were reported

Ni 2013

Partial liver resection

Yes

Yes

Yes

Yes

No

  1. Short‐term mortality

  2. Serious adverse events

  3. Health‐related quality of life

  4. Mild adverse events

  5. Length of hospital stay

Wang 2010

Gastrectomy

Yes

Yes

Ys

Yes

No

  1. Short‐term mortality

  2. Mild adverse events

  3. Length of hospital stay

  4. Readmissions

  5. Costs

Zhao 2014

Oesophagectomy

Yes

Yes

N

No

No

  1. Serious adverse events

  2. Mild adverse events

  3. Length of hospital stay

  4. Readmissions

  5. Costs

The table shows the surgeries that the participants underwent, the elements of enhanced recovery protocol that were different between the intervention and control, and the outcomes reported in the trials.

Figuras y tablas -
Table 1. Participants, elements of enhanced recovery protocol and outcomes reported in included trials
Comparison 1. Enhanced recovery protocol versus standard care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Short‐term mortality Show forest plot

7

868

Risk Ratio (M‐H, Fixed, 95% CI)

2.79 [0.44, 17.73]

2 Serious adverse events (proportion) Show forest plot

2

341

Risk Ratio (M‐H, Fixed, 95% CI)

5.57 [0.68, 45.89]

3 Serious adverse events (number) Show forest plot

7

859

Rate Ratio (Fixed, 95% CI)

0.72 [0.45, 1.13]

4 Health‐related quality of life Show forest plot

4

373

Std. Mean Difference (IV, Random, 95% CI)

0.29 [‐0.04, 0.62]

5 Mild adverse events (proportion) Show forest plot

4

525

Risk Ratio (M‐H, Fixed, 95% CI)

0.58 [0.39, 0.85]

6 Mild adverse events (number) Show forest plot

9

1014

Rate Ratio (Fixed, 95% CI)

0.52 [0.39, 0.70]

7 Length of hospital stay Show forest plot

9

1014

Mean Difference (IV, Fixed, 95% CI)

‐2.19 [‐2.53, ‐1.85]

8 Readmissions Show forest plot

7

733

Risk Ratio (M‐H, Fixed, 95% CI)

1.40 [0.69, 2.87]

9 Costs Show forest plot

4

282

Mean Difference (IV, Fixed, 95% CI)

‐0.63 [‐0.84, ‐0.42]

Figuras y tablas -
Comparison 1. Enhanced recovery protocol versus standard care
Comparison 2. Enhanced recovery protocol versus standard care (subgroup analysis)

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Short‐term mortality Show forest plot

6

747

Risk Ratio (M‐H, Fixed, 95% CI)

0.98 [0.06, 15.17]

1.1 Oesophagectomy

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

1.2 Gastrectomy

3

548

Risk Ratio (M‐H, Fixed, 95% CI)

0.98 [0.06, 15.17]

1.3 Liver surgery

3

199

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

2 Serious adverse events (proportion) Show forest plot

2

341

Risk Ratio (M‐H, Fixed, 95% CI)

5.57 [0.68, 45.89]

2.1 Oesophagectomy

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

2.2 Gastrectomy

1

44

Risk Ratio (M‐H, Fixed, 95% CI)

3.0 [0.13, 69.87]

2.3 Liver surgery

1

297

Risk Ratio (M‐H, Fixed, 95% CI)

8.39 [0.44, 161.01]

3 Serious adverse events (number) Show forest plot

6

Rate Ratio (Fixed, 95% CI)

0.87 [0.53, 1.43]

3.1 Oesophagectomy

1

Rate Ratio (Fixed, 95% CI)

0.33 [0.01, 8.12]

3.2 Gastrectomy

2

Rate Ratio (Fixed, 95% CI)

1.10 [0.35, 3.49]

3.3 Liver surgery

3

Rate Ratio (Fixed, 95% CI)

0.84 [0.48, 1.48]

4 Health‐related quality of life Show forest plot

4

373

Std. Mean Difference (IV, Random, 95% CI)

0.29 [‐0.04, 0.62]

4.1 Oesophagectomy

0

0

Std. Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

4.2 Gastrectomy

2

122

Std. Mean Difference (IV, Random, 95% CI)

‐0.03 [‐0.39, 0.32]

4.3 Liver surgery

2

251

Std. Mean Difference (IV, Random, 95% CI)

0.52 [0.27, 0.77]

Figuras y tablas -
Comparison 2. Enhanced recovery protocol versus standard care (subgroup analysis)
Comparison 3. Enhanced recovery protocol versus standard care (sensitivity analysis)

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Health‐related quality of life Show forest plot

3

282

Std. Mean Difference (IV, Random, 95% CI)

0.17 [‐0.19, 0.53]

2 Length of hospital stay Show forest plot

3

267

Mean Difference (IV, Fixed, 95% CI)

‐2.31 [‐2.93, ‐1.69]

3 Costs Show forest plot

3

214

Mean Difference (IV, Fixed, 95% CI)

‐0.60 [‐0.81, ‐0.39]

Figuras y tablas -
Comparison 3. Enhanced recovery protocol versus standard care (sensitivity analysis)