Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

155 questions · 157 findings · 22 reviews · Heart

No studies found 6 · 3.8%GRADE not reported 7 · 4.5%Very low 23 · 14.6%Low 60 · 38.2%Moderate 44 · 28%High 17 · 10.8%

Intervention not reported

Composite MACE Long‐term · people with chronic ischaemic heart disease and congestive heart failure

The intervention showed no clear difference in composite MACE Long‐term (low certainty).

1 finding from 1 review

Intervention not reported

Coronary heart disease (death from cardiovascular causes and non‐fatal myocardial infarction) · Post‐menopausal women

The intervention probably leads to lower coronary heart disease (death from cardiovascular causes and… (moderate certainty).

1 finding from 1 review

Intervention not reported

Coronary heart disease (death from cardiovascular causes and non‐fatal myocardial infarction) · Post‐menopausal women

The intervention showed no clear difference in coronary heart disease (death from cardiovascular causes and… (high certainty).

1 finding from 1 review

Transmyocardial laser revascularization vs medical treatment

Angina reduction ‐ NYHA scale Decrease in two angina classes or more · patients with refractory angina

Transmyocardial laser revascularization may leads to higher angina reduction Decrease in two angina classes or more compared with medical treatment (low certainty).

2 findings from 1 review

Transmyocardial laser revascularization vs medical treatment

Angina reduction ‐ CCS score Decrease in two angina classes or more · patients with refractory angina

Transmyocardial laser revascularization may leads to higher angina reduction ‐ CCS score Decrease in two angina classes or more compared with medical treatment (low certainty).

1 finding from 1 review