Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,756 questions · 11,779 findings · 747 reviews · Headline outcomes only

No studies found 3,205 · 27.2%GRADE not reported 628 · 5.3%Very low 3,261 · 27.7%Low 2,913 · 24.7%Moderate 1,453 · 12.3%High 319 · 2.7%

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Brief admission to psychiatric hospital by self‐referral plus treatment as usual vs treatment

Deatha Timing of outcome assessment: 12 months · adults meeting 3 or more diagnostic criteria for borderline personality disorder

Brief admission to psychiatric hospital by self‐referral plus… showed no clear difference in deatha Timing of outcome assessment: 12 months compared with treatment (low certainty).

1 finding from 1 review

Palmitoylethanolamide and luteolin vs no intervention

Recovery of sense of smell (as · adults with olfactory dysfunction for ≥ 4 weeks following COVID‐19 infection

It is very uncertain whether palmitoylethanolamide and luteolin changes recovery of sense of smell (as compared with no intervention (very low certainty).

1 finding from 1 review

Intranasal steroid spray vs placebo or no intervention

Presence of normal olfactory function · people with olfactory dysfunction for less than 4 weeks following COVID‐19 infection

It is very uncertain whether intranasal steroid spray changes presence of normal olfactory function Assessed by participants as a… compared with no intervention/placebo (very low certainty).

2 findings from 1 review

Intranasal steroid drops vs placebo

Presence of normal olfactory function · participants with olfactory dysfunction following COVID‐19 for ≤ 15 days

Intranasal steroid drops showed no clear difference in presence of normal olfactory function Assessed by participants > 4… compared with placebo (low certainty).

1 finding from 1 review