Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,262 questions · 2,405 findings · 248 reviews · Headline outcomes only

No studies found 507 · 21.1%GRADE not reported 93 · 3.9%Very low 657 · 27.3%Low 708 · 29.4%Moderate 387 · 16.1%High 53 · 2.2%

Continuous support vs usual care

Negative rating of/negative feelings about birth experience · women during childbirth

Continuous support may leads to lower negative rating of/negative feelings about birth experience compared with usual care (all trials) (low certainty).

1 finding from 1 review

Continuous support vs usual care

Exclusive or any breastfeeding at any time point, as defined by trial authors · women during childbirth

Continuous support showed no clear difference in exclusive or any breastfeeding at any time point, as defined by… compared with usual care (all trials) (low certainty).

1 finding from 1 review

Non‐invasive ventilation vs usual care

All‐cause mortality · Patients admitted to hospital with acute hypercapnic respiratory failure due to an exacerbation of chronic obstructive pulmonary disease…

Non‐invasive ventilation probably leads to lower mortality compared with usual medical care (moderate certainty).

1 finding from 1 review

Non‐invasive ventilation vs usual care

Need for intubation · Patients admitted to hospital with acute hypercapnic respiratory failure due to an exacerbation of chronic obstructive pulmonary disease…

Non‐invasive ventilation probably leads to lower need for endotracheal intubation compared with usual medical care (moderate certainty).

1 finding from 1 review