Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,756 questions · 13,493 findings · 1,305 reviews · Headline outcomes only

No studies found 2,594 · 19.2%GRADE not reported 728 · 5.4%Very low 2,868 · 21.3%Low 3,777 · 28%Moderate 2,620 · 19.4%High 906 · 6.7%

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Hydroxychloroquine (HCQ) vs placebo or usual care

Participants with prolongation of QT‐interval on ECG · adults with mild to severe COVID‐19

It is very uncertain whether hydroxychloroquine (HCQ) changes participants with prolongation of QT‐interval on ECG compared with standard care or placebo (very low certainty).

1 finding from 1 review

Hydroxychloroquine (HCQ) vs placebo

Development of confirmed COVID‐19 at 14 days from enrolment · people who have been exposed to SARS‐CoV‐2

It is very uncertain whether hydroxychloroquine (HCQ) changes development of confirmed COVID‐19 at 14 days from enrolment compared with placebo (very low certainty).

1 finding from 1 review

Siponimod vs placebo

Relapse · people with multiple sclerosis

It is very uncertain whether siponimod changes number of participants with relapses at 6 months compared with placebo (very low certainty).

1 finding from 1 review

Siponimod vs placebo

Disability worsening · people with multiple sclerosis

Siponimod may leads to lower participants with disability worsening at 6 months compared with placebo (low certainty).

1 finding from 1 review

Siponimod vs placebo

Withdrawals due to adverse events · people with multiple sclerosis

Siponimod showed no clear difference in number of participants who withdrew due to AEs at 6 months compared with placebo (low certainty).

1 finding from 1 review

Siponimod vs placebo

Annualised relapse rate · people with multiple sclerosis

Siponimod may leads to lower annualised relapse rate compared with placebo (low certainty).

1 finding from 1 review

Siponimod vs placebo

Mean number of gadolinium‐enhancing lesions on T1‐weighted brain MRI image at 6 months · people with multiple sclerosis

It is very uncertain whether siponimod changes mean number of gadolinium‐enhancing lesions on T1‐weighted brain MRI… compared with placebo (very low certainty).

1 finding from 1 review

Siponimod vs placebo

Mean number of new lesions or enlarged pre‐existing lesions on T2‐weighted brain MRI images at 6 months · people with multiple sclerosis

Siponimod may leads to lower mean number of new lesions or enlarged pre‐existing lesions on… compared with placebo (low certainty).

1 finding from 1 review

Siponimod vs placebo

SAEs · people with multiple sclerosis

Siponimod showed no clear difference in number of participants with at least one SAE at 6 months compared with placebo (low certainty).

1 finding from 1 review