What do systematic reviews say?

Intervention diet vs usual on‐treatment diet

Summary of findings: Diet interventions showed no clear difference in QOL scores (IBDQ) (higher scores better) compared with usual on‐treatment diet (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  MD 4.6
  1 study · 50 participants
  Low
• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 119 participants
  GRADE not reported
• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  MD 2.4
  1 study · 76 participants
  Low

Selenium vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Probiotics vs placebo or control

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Amifostine vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Hydrogel spacer vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Endorectal balloon vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Proteolytic enzymes vs placebo or control

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Protein supplements vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Superoxide dismutase (SOD) vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Bile acid sequestrants vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: IMRT vs 3DCRT

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  0 participants
  GRADE not reported

Glutamine vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Evening RT vs morning RT

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Sucralfate vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Octreotide vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Misoprostol vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Counselling vs no intervention

It is very uncertain whether summary of findings: Counselling changes QOL scores (5‐point VAS; lower is better) compared with no intervention (very low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 152 participants
  Very low

Summary of findings: Conformal RT vs conventional dose RT

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  0 participants
  GRADE not reported

Corticosteroids vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Sodium butyrate vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found