Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

81 questions · 83 findings · 22 reviews · Gut

No studies found 10 · 12%GRADE not reported 9 · 10.8%Very low 38 · 45.8%Low 21 · 25.3%Moderate 5 · 6%High 0 · 0%

Any‐treatment‐dose vitamin D (greater than 400 IU/day) vs supplemental‐dose vitamin D (less than 400 IU/day)

Withdrawals due to adverse events · people with inflammatory bowel disease

It is very uncertain whether any‐treatment‐dose vitamin D (greater than 400 IU/day) changes withdrawals due to adverse events compared with supplemental‐dose vitamin D (less than 400 IU/day) (very low certainty).

1 finding from 1 review

High‐treatment‐dose vitamin D (greater than 1000 IU/day) vs low‐treatment‐dose vitamin D (400 IU/day to 1000 IU/day)

Withdrawals due to adverse events · people with inflammatory bowel disease

It is very uncertain whether high‐treatment‐dose vitamin D (greater than 1000 IU/day) changes withdrawals due to adverse events compared with low‐treatment‐dose vitamin D (400 IU/day to 1000 IU/day) (very low certainty).

1 finding from 1 review

Infliximab 5 mg/kg vs infliximab 10 mg/kg

Withdrawals due to adverse events · Patients with active Crohn's disease

The review found no eligible studies for this question.

2 findings from 1 review

Infliximab 5–10 mg/kg vs placebo

Withdrawals due to adverse events · Patients with active Crohn's disease

The review found no eligible studies for this question.

2 findings from 1 review