Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,776 questions · 7,311 findings · 959 reviews · Headline outcomes only

No studies found 1,498 · 20.5%GRADE not reported 303 · 4.1%Very low 1,839 · 25.2%Low 1,991 · 27.2%Moderate 1,277 · 17.5%High 403 · 5.5%

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LAMA vs LABA

Moderate to severe exacerbations: low‐risk population · chronic obstructive pulmonary disease with predicted FEV1 of less than 80%

LAMA showed no clear difference in moderate to severe exacerbations: low‐risk population compared with LABA (moderate certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Severe exacerbations: low‐risk population · chronic obstructive pulmonary disease with predicted FEV1 of less than 80%

LABA/LAMA showed no clear difference in severe exacerbations: low‐risk population compared with LABA/ICS (moderate certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Pneumonia: low‐risk population · chronic obstructive pulmonary disease with predicted FEV1 of less than 80%

LABA/LAMA probably leads to lower pneumonia: low‐risk population compared with LABA/ICS (moderate certainty).

1 finding from 1 review

LABA/LAMA vs LAMA

Moderate to severe exacerbations: low‐risk population · chronic obstructive pulmonary disease with predicted FEV1 of less than 80%

LABA/LAMA showed no clear difference in moderate to severe exacerbations: low‐risk population compared with LAMA (low certainty).

1 finding from 1 review

Inhaled NO vs control

Death or use of ECMO; studies that did not allow back‐up use of iNO in controls · respiratory failure in infants born at or near term

Inhaled NO leads to lower death or use of ECMO; studies that did not allow back‐up use of iNO… compared with control (high certainty).

1 finding from 1 review

Outcomes for all interventions for smoking cessation in pregnancy vs control: subgrouped by main intervention strategy (comparison 20)

Birthweight < 2500 (g) · Pregnant women who smoke

Outcomes for all interventions for smoking cessation in pregnancy leads to lower low birthweight (under 2500 g) compared with control: subgrouped by main intervention strategy (comparison 20) (high certainty).

1 finding from 1 review

Intervention not reported

PIPP score during drug infusion Range of scale 0‐21 for infants < 28 weeks' PMA and 0‐18 for infants > 36 weeks' PMA. Lower score = less pain (Stevens 1996) · neonates requiring intubation and ventilation

The intervention showed no clear difference in PIPP score during drug infusion Range of scale 0‐21 for infants < 28… (moderate certainty).

1 finding from 1 review

Intervention not reported

PIPP score during drug infusion Range of scale 0‐21 for infants < 28 weeks' PMA and 0‐18 for infants > 36 weeks' PMA. Lower score = less pain (Stevens 1996) · neonates requiring intubation and ventilation

The intervention showed no clear difference in PIPP score during drug infusion Range of scale 0‐21 for infants < 28… (moderate certainty).

1 finding from 1 review

Intervention not reported

Low birthweight · HIV‐positive women during pregnancy and immediate postpartum period

The intervention probably leads to lower low birthweight (moderate certainty).

1 finding from 1 review

Recombinant luteinizing hormone (rLH) combined with recombinant follicle‐stimulating hormone (rFSH) vs rFSH alone

Cancellation rate for low response · Women undergoing ovarian stimulation with gonadotrophins in IVF and ICSI procedures

Recombinant luteinizing hormone (rLH) combined with recombinant… showed no clear difference in cancellation rate for low response compared with rFSH alone (low certainty).

1 finding from 1 review