Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

510 questions · 532 findings · 49 reviews · Headline outcomes only

No studies found 120 · 22.6%GRADE not reported 34 · 6.4%Very low 146 · 27.4%Low 138 · 25.9%Moderate 75 · 14.1%High 19 · 3.6%

Intervention diet vs usual on‐treatment diet

Diarrhoea (grade 2+) · People undergoing pelvic radiotherapy for urological, gynaecological or colorectal cancer

Summary of findings: Diet interventions showed no clear difference in diarrhoea (grade 2+) compared with usual on‐treatment diet (low certainty).

1 finding from 1 review

Intervention diet vs usual on‐treatment diet

QoL · People undergoing pelvic radiotherapy for urological, gynaecological or colorectal cancer

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

3 findings from 1 review

Intervention diet vs usual on‐treatment diet

Diarrhoea (grade 1+) · People undergoing pelvic radiotherapy for urological, gynaecological or colorectal cancer

Summary of findings: Diet interventions showed no clear difference in diarrhoea (grade 1+) compared with usual on‐treatment diet (low certainty).

1 finding from 1 review

Intervention diet vs usual on‐treatment diet

Mean GI symptom scores (Vaizey scale) (higher scores better) · People undergoing pelvic radiotherapy for urological, gynaecological or colorectal cancer

Summary of findings: Diet interventions showed no clear difference in mean GI symptom scores (Vaizey scale) (higher scores better) compared with usual on‐treatment diet (low certainty).

1 finding from 1 review

Dietary interventions vs control

Body‐mass index (BMI) · children aged 12 to 18 years
3 findings from 1 review