Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

58 questions · 60 findings · 24 reviews · Headline outcomes only

No studies found 7 · 11.7%GRADE not reported 1 · 1.7%Very low 16 · 26.7%Low 16 · 26.7%Moderate 14 · 23.3%High 6 · 10%

Inhaled steroids vs systemic corticosteroids

Death or BPD (28 days) · preterm infants with respiratory distress for initial respiratory support

Inhaled steroids showed no clear difference in death or BPD at 28 days compared with systemic corticosteroids (low certainty).

1 finding from 1 review

Inhaled steroids vs systemic steroids

Death or bronchopulmonary dysplasia at 36 weeks PMA · Neonates with developing BPD

Inhaled steroids showed no clear difference in death or BPD at 36 weeks' postmenstrual age compared with systemic steroids (moderate certainty).

2 findings from 1 review

Inhaled steroids vs systemic corticosteroids

BPD or death at 36 weeks' postmenstrual age№ of participants: 0 (0 RCTs) · preterm infants with respiratory distress for initial respiratory support

Inhaled steroids showed no clear difference in death or BPD at 36 weeks' postmenstrual age among all randomised compared with systemic corticosteroids (moderate certainty).

1 finding from 1 review

Oral alkylating agents ± steroids vs steroids or placebo or both, or no treatment

Death at final · primary membranous nephropathy in adults with nephrotic syndrome

Oral alkylating agents ± steroids showed no clear difference in death at final compared with placebo/no treatment/steroids (low certainty).

1 finding from 1 review

Calcineurin inhibitors ± steroids vs placebo/no treatment/supportive treatment/steroids

Death at final · primary membranous nephropathy in adults with nephrotic syndrome

It is very uncertain whether calcineurin inhibitors ± steroids changes death at final compared with placebo/no treatment/supportive treatment/steroids (very low certainty).

1 finding from 1 review

Calcineurin inhibitors ± steroids vs alkylating agents ± steroids

Death at final · primary membranous nephropathy in adults with nephrotic syndrome

It is very uncertain whether calcineurin inhibitors ± steroids changes death at final compared with alkylating agents ± steroids (very low certainty).

1 finding from 1 review

Corticosteroids vs placebo

Perinatal mortality · Pregnant women with hyperemesis gravidarum

It is very uncertain whether corticosteroids changes stillbirth and neonatal death compared with placebo (very low certainty).

1 finding from 1 review

Systemic corticosteroids vs placebo

Mortality or serious adverse events requiring hospital admission · people with radicular low back pain (not due to spinal stenosis)

It is very uncertain whether systemic corticosteroids changes participants who experienced a serious adverse event Adverse event… compared with placebo (very low certainty).

1 finding from 1 review

Inhaled corticosteroids plus standard care vs placebo or usual care

Admission to hospital or death · adults with a confirmed diagnosis of mild COVID‐19, of whom only 10% (219/2132) participants had received ≥ 1 vaccination

Inhaled corticosteroids plus standard care probably leads to lower admission to hospital or death compared with standard care (with or without placebo) (moderate certainty).

1 finding from 1 review