Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

948 questions · 998 findings · 100 reviews · Headline outcomes only

No studies found 233 · 23.3%GRADE not reported 40 · 4%Very low 203 · 20.3%Low 271 · 27.2%Moderate 176 · 17.6%High 75 · 7.5%

Vitamin E vs placebo

Tardive dyskinesia: Deterioration of symptoms · patients with antipsychotic‐induced tardive dyskinesia

VITAMIN E may leads to lower tardive dyskinesia: 3. Deterioration of symptoms compared with PLACEBO (low certainty).

1 finding from 1 review

Vitamin E vs placebo

Adverse effect: any · patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether VITAMIN E changes adverse effect: any compared with PLACEBO (very low certainty).

1 finding from 1 review

Vitamin E vs placebo

Leaving the study early · patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether VITAMIN E changes acceptability of treatment (measured by participants leaving the… compared with PLACEBO (very low certainty).

1 finding from 1 review

Vitamin D given to infants vs vitamin D given to lactating mothers

Vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to infants changes vitamin D insufficiency: 25‐OH vitamin D < 50 nmol/L compared with vitamin D given to lactating mothers (very low certainty).

1 finding from 1 review

Vitamin D given to infants vs vitamin D given to lactating mothers

Vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L · term breastfed infants to prevent vitamin D deficiency and improve bone health

It is very uncertain whether vitamin D given to infants changes vitamin D deficiency: 25‐OH vitamin D < 30 nmol/L compared with vitamin D given to lactating mothers (very low certainty).

1 finding from 1 review