Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

676 questions · 705 findings · 98 reviews · Headline outcomes only

No studies found 183 · 26%GRADE not reported 47 · 6.7%Very low 209 · 29.6%Low 153 · 21.7%Moderate 85 · 12.1%High 28 · 4%

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids vs single course

D1: Total deaths (after randomisation) up to mid‐ to later childhood · the child

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids showed no clear difference in D1: Total deaths (after randomisation) up to mid‐ to later childhood compared with single course (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids vs single course

D2: Neurocognitive impairment atmid‐ to later childhood · the child

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids showed no clear difference in D2: Neurocognitive impairment atmid‐ to later childhood compared with single course (low certainty).

1 finding from 1 review

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids vs single course

D3: Survival free of neurocognitive impairment atmid‐ to later childhood · the child

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids showed no clear difference in D3: Survival free of neurocognitive impairment atmid‐ to later… compared with single course (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids vs single course

D4: Survival free of major neurocognitive impairment atmid‐ to later childhood · the child

Summary of findings table ‐ Repeat dose(s) of prenatal corticosteroids showed no clear difference in D4: Survival free of major neurocognitive impairment atmid‐ to later… compared with single course (moderate certainty).

1 finding from 1 review

IVIg vs placebo

Proportion of participants with an improvement in disability at 12 months or later · people with multifocal motor neuropathy

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Incidence of a secondary primary breast cancer (e.g. in the contralateral breast) ‐ endocrine therapies not separated (exemestane (AI)/tamoxifen (SERM)/unknown) · women receiving endocrine therapy (selective oestrogen receptor modulator or aromatase inhibitor)
1 finding from 1 review

Intervention not reported

Severe hearing loss defined as a threshold of 60 dB or more in the better ear or requiring bilateral hearing aid during the · children with acute bacterial meningitis

The intervention showed no clear difference in severe hearing loss defined as a threshold of 60 dB or more in the… (low certainty).

1 finding from 1 review

Carotid artery stenting vs endarterectomy

Death or any stroke between randomisation and 30 days after treatment or ipsilateral stroke until end of · people with symptomatic carotid stenosis

Carotid artery stenting leads to higher death or any stroke between randomisation and 30 days after… compared with endarterectomy (high certainty).

1 finding from 1 review

Carotid artery stenting vs endarterectomy

Death or any stroke between randomisation and 30 days after treatment or ipsilateral stroke until end of · asymptomatic carotid stenosis

Carotid artery stenting showed no clear difference in death or any stroke between randomisation and 30 days after… compared with endarterectomy (moderate certainty).

1 finding from 1 review

Intervention not reported

Ipsilateral ischaemic stroke, and any operative stroke or death (five‐year cumulative) · people with carotid stenosis and recent transient ischaemic attacks (TIA) or minor ischaemic strokes in the territory of that artery

The intervention showed no clear difference in ipsilateral ischaemic stroke, and any operative stroke or death… (moderate certainty).

1 finding from 1 review