Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

95 questions · 97 findings · 13 reviews · Headline outcomes only

No studies found 26 · 26.8%GRADE not reported 4 · 4.1%Very low 17 · 17.5%Low 27 · 27.8%Moderate 20 · 20.6%High 3 · 3.1%

Duplex ultrasound plus pulse palpation and arterial pressure index (ABI or TBI) vs pulse palpation plus arterial pressure index (ABI or TBI) (long term)

Secondary patency (24 months) · people who underwent a lower limb revascularisation

Duplex ultrasound plus pulse palpation and arterial pressure index… showed no clear difference in vessel or graft secondary patency compared with pulse palpation plus arterial pressure index (ABI or TBI) (long term) (low certainty).

1 finding from 1 review

Fetal growth (biometry) + umbilical artery Doppler vs fetal growth

Any perinatal death after randomisation · women with twin pregnancies were randomised from 25 weeks

Fetal growth (biometry) + umbilical artery Doppler showed no clear difference in perinatal mortality (after randomisation) compared with fetal growth (low certainty).

1 finding from 1 review

Fetal growth (biometry) + umbilical artery Doppler vs fetal growth

Gestational age at birth (weeks) · women with twin pregnancies were randomised from 25 weeks

Fetal growth (biometry) + umbilical artery Doppler showed no clear difference in gestational age at birth (weeks) compared with fetal growth (moderate certainty).

1 finding from 1 review

Fetal growth (biometry) + umbilical artery Doppler vs fetal growth

Number of antenatal hospital admissions · women with twin pregnancies were randomised from 25 weeks

Fetal growth (biometry) + umbilical artery Doppler showed no clear difference in antenatal admission to hospital compared with fetal growth (high certainty).

1 finding from 1 review