What do systematic reviews say?

Roux‐en‐Y vs Billroth‐I after distal gastrectomy

• Roux‐en‐Y versus Billroth‐I reconstruction after distal gastrectomy for gastric cancer 2021 · Cochrane Headline outcomes only
  no estimate extracted
  6 studies · 695 participants
  Low

Probiotic + 5‐aminosalicylic acid (5‐ASA) (mesalazine) vs 5‐aminosalicylic acid (5‐ASA) (mesalazine)

The review found no eligible studies for this question.

• Probiotics for maintenance of remission in ulcerative colitis 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

5‐ASA vs placebo

The review found no eligible studies for this question.

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

High dose 5‐ASA vs low dose 5‐ASA

The review found no eligible studies for this question.

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

5‐ASA vs purine antimetabolites

It is very uncertain whether 5‐ASA changes health related quality of life compared with purine antimetabolites (very low certainty).

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  RR 1.42 [0.27, 7.46]
  1 study · 35 participants
  Very low

5‐ASA vs anti TNF‐ɑ

It is very uncertain whether 5‐ASAs changes health related quality of life compared with anti TNF‐ɑ (very low certainty).

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  RR 0.19 [0.07, 0.54]
  1 study · 34 participants
  Very low

5‐ASA vs no treatment

The review found no eligible studies for this question.

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Intervention diet vs control diet

The review found no eligible studies for this question.

• Dietary interventions for induction and maintenance of remission in inflammatory bowel disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Intervention diet vs control diet

The review found no eligible studies for this question.

• Dietary interventions for induction and maintenance of remission in inflammatory bowel disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Duodenal stenting vs surgical palliation

The review found no eligible studies for this question.

• Stent placement versus surgical palliation for adults with malignant gastric outlet obstruction 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Intervention not reported

The review found no eligible studies for this question.

• Pharmacological interventions for acute pancreatitis 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Sulphasalazine vs placebo

The review found no eligible studies for this question.

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Probiotics vs 5‐aminosalicylic acid (5‐ASA) (mesalazine)

• Probiotics for maintenance of remission in ulcerative colitis 2020 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 222 participants
  Low

Probiotics vs placebo

• Probiotics for maintenance of remission in ulcerative colitis 2020 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 25 participants
  Low

Enhanced recovery protocol vs usual care

• Enhanced recovery protocols for major upper gastrointestinal, liver and pancreatic surgery 2016 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 373 participants
  Very low

Pregabalin vs placebo

• Pregabalin for decreasing pancreatic pain in chronic pancreatitis 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 64 participants
  Moderate

Non‐surgical vs surgical treatment of oesophageal cancer (primary outcomes)

• Non‐surgical versus surgical treatment for oesophageal cancer 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 165 participants
  Very low

Non‐surgical vs surgical treatment of oesophageal cancer (primary outcomes)

• Non‐surgical versus surgical treatment for oesophageal cancer 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 62 participants
  Very low

Intervention diet vs control diet

• Dietary interventions for induction and maintenance of remission in inflammatory bowel disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 12 participants
  Very low

Intervention diet vs control diet

• Dietary interventions for induction and maintenance of remission in inflammatory bowel disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 14 participants
  Very low