Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

251 questions · 277 findings · 23 reviews

No studies found 64 · 23.1%GRADE not reported 13 · 4.7%Very low 131 · 47.3%Low 59 · 21.3%Moderate 7 · 2.5%High 3 · 1.1%

Light interventions (1/7): Bright light at night vs normal light (300 lux)

Sleepiness during the night shift, postintervention; · Shift workers
4 findings from 1 review
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Nap interventions (1/2): Nap at night (single nap opportunity) vs no‐nap

Sleepiness during the night shift, postintervention; · Shift workers
5 findings from 1 review
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Pregabalin vs placebo

Treatment‐related adverse effects · adults and children with sickle cell disease experiencing neuropathic pain

It is very uncertain whether summary of findings ‐ Pharmacological intervention (pregabalin) changes treatment‐related adverse effects compared with placebo (very low certainty).

1 finding from 1 review

Non‐pharmacological interventions for fear of childbirth (tocophobia) vs usual care

Birth preferences: prefer caesarean section · women with fear of childbirth (tocophobia)

Non‐pharmacological interventions for fear of childbirth (tocophobia) showed no clear difference in birth preferences: prefer caesarean section compared with usual care (low certainty).

1 finding from 1 review

Non‐pharmacological interventions for fear of childbirth (tocophobia) vs usual care

Epidural analgesia during labour · women with fear of childbirth (tocophobia)

Non‐pharmacological interventions for fear of childbirth (tocophobia) showed no clear difference in epidural analgesia during labour compared with usual care (low certainty).

1 finding from 1 review

Brief intervention vs brief advice, information, or assessment only

Harmful alcohol use · people with hazardous or harmful alcohol consumption
2 findings from 1 review