Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,811 questions · 70,850 findings · 5,139 reviews

No studies found 15,174 · 21.4%GRADE not reported 6,479 · 9.1%Very low 17,330 · 24.5%Low 17,814 · 25.1%Moderate 11,056 · 15.6%High 2,997 · 4.2%

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Evening vs morning dosing regimen

All‐cause mortality · adults with primary (essential) hypertension whose systolic or diastolic (or both) blood pressure levels were 130/80 mmHg or greater

It is very uncertain whether evening changes all‐cause mortality compared with morning dosing regimen (very low certainty).

1 finding from 1 review

Evening vs morning dosing regimen

Serious adverse events · adults with primary (essential) hypertension whose systolic or diastolic (or both) blood pressure levels were 130/80 mmHg or greater

It is very uncertain whether evening changes serious adverse events compared with morning dosing regimen (very low certainty).

1 finding from 1 review

Evening vs morning dosing regimen

Overall adverse events · adults with primary (essential) hypertension whose systolic or diastolic (or both) blood pressure levels were 130/80 mmHg or greater

It is very uncertain whether evening changes overall adverse events compared with morning dosing regimen (very low certainty).

1 finding from 1 review

Evening vs morning dosing regimen

Withdrawals due to adverse events · adults with primary (essential) hypertension whose systolic or diastolic (or both) blood pressure levels were 130/80 mmHg or greater

It is very uncertain whether evening changes withdrawals from treatment due to adverse events compared with morning dosing regimen (very low certainty).

1 finding from 1 review

Magnesium sulphate vs placebo (outcomes

Death (fetal, neonatal, or later (up to 2 years' corrected age))** · women at risk of preterm birth (< 34 weeks' gestation)

Magnesium sulphate showed no clear difference in death (fetal, neonatal, or later (up to 2 years' corrected age))** compared with placebo (outcomes (moderate certainty).

1 finding from 1 review

Magnesium sulphate vs placebo (outcomes

Death or cerebral palsy · women at risk of preterm birth (< 34 weeks' gestation)

Magnesium sulphate showed no clear difference in death or cerebral palsy (up to school age)** compared with placebo (outcomes (low certainty).

2 findings from 1 review

Magnesium sulphate vs placebo (outcomes

Major neurodevelopmental disability at childhood · women at risk of preterm birth (< 34 weeks' gestation)

It is very uncertain whether magnesium sulphate changes major neurodevelopmental disability (school age)** compared with placebo (outcomes (very low certainty).

1 finding from 1 review

Magnesium sulphate vs placebo (outcomes

Death or major neurodevelopmental disability · women at risk of preterm birth (< 34 weeks' gestation)

Magnesium sulphate showed no clear difference in death or major neurodevelopmental disability (up to school age)** compared with placebo (outcomes (low certainty).

2 findings from 1 review

Magnesium sulphate vs placebo (outcomes

Severe maternal outcome potentially related to treatment (death, respiratory arrest, or cardiac arrest)** · women at risk of preterm birth (< 34 weeks' gestation)

Magnesium sulphate showed no clear difference in severe maternal outcome potentially related to treatment (death,… compared with placebo (outcomes (low certainty).

1 finding from 1 review