Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,209 questions · 2,322 findings · 227 reviews · Headline outcomes only

No studies found 644 · 27.7%GRADE not reported 135 · 5.8%Very low 591 · 25.5%Low 582 · 25.1%Moderate 309 · 13.3%High 61 · 2.6%

Benzodiazepines vs phenobarbital (as active placebo)

Tardive dyskinesia: No clinically important improvement · patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether benzodiazepines changes tardive dyskinesia: no clinically important improvement compared with phenobarbital (as active placebo) (very low certainty).

1 finding from 1 review

Two infusions of natalizumab (300 mg or 3 mg/kg) vs placebo

Failure to induce clinical response (Panaccione 2010) CDAI ‐ (≥100 point reduction) · Patients with active Crohn's disease

Two infusions of natalizumab (300 mg or 3 mg/kg) showed no clear difference in failure to induce clinical response at 6 weeks compared with placebo (low certainty).

1 finding from 1 review

Two infusions of natalizumab (6 mg/kg) vs placebo

Failure to induce remission at 6 weeks · Patients with active Crohn's disease

Two infusions of natalizumab (6 mg/kg) showed no clear difference in failure to induce remission at 6 weeks compared with placebo (moderate certainty).

2 findings from 1 review

Two infusions of natalizumab (6 mg/kg) vs placebo

Failure to induce clinical response (Panaccione 2010) CDAI ‐ (≥100 point reduction) · Patients with active Crohn's disease

Two infusions of natalizumab (6 mg/kg) showed no clear difference in failure to induce clinical response at 6 weeks compared with placebo (moderate certainty).

2 findings from 1 review