Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,532 questions · 2,642 findings · 483 reviews · Headline outcomes only

No studies found 534 · 20.2%GRADE not reported 82 · 3.1%Very low 641 · 24.3%Low 807 · 30.5%Moderate 472 · 17.9%High 106 · 4%

Distress tolerance training vs control

Smoking cessation · people who smoke

Distress tolerance training showed no clear difference in distress tolerance training vs matched‐intensity smoking cessation… compared with control (low certainty).

2 findings from 1 review

Yoga vs control

Smoking cessation · people who smoke

It is very uncertain whether yoga changes yoga vs matched‐intensity smoking cessation treatment: smoking… compared with control (very low certainty).

1 finding from 1 review

Lateral postures vs other postures

Serious neonatal morbidity (composite outcome defined as death, admission to neonatal intensive care, neonatal encephalopathy, or as defined by trialists) · fetal malposition in labour

It is very uncertain whether lateral postures changes serious neonatal morbidity (composite outcome defined as death,… compared with other postures (very low certainty).

1 finding from 1 review

Probiotics vs placebo

Hypertensive disorders of pregnancy: pre‐eclampsia · preventing gestational diabetes

Probiotics leads to higher hypertensive disorders of pregnancy (pre‐eclampsia) compared with placebo (high certainty).

1 finding from 1 review

Intervention not reported

Duration of neonatal intensive care unit stay (hours or days) · preterm infants less than 30 weeks' gestational age requiring conventional mechanical ventilation for respiratory distress syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Hydromorphone vs oxycodone

Participant‐reported pain intensity VAS (0‐10, lower score = less pain) · people with moderate to severe cancer pain
1 finding from 1 review

Hydromorphone vs fentanyl

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people with moderate to severe cancer pain
1 finding from 1 review

Hydromorphone vs morphine

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people with moderate to severe cancer pain
1 finding from 1 review