Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

383 questions · 414 findings · 46 reviews · Hypertension

No studies found 15 · 3.6%GRADE not reported 31 · 7.5%Very low 80 · 19.3%Low 148 · 35.7%Moderate 116 · 28%High 24 · 5.8%

First‐line thiazides vs calcium channel blockers

Total serious adverse events Duration: 1.75 to 3 years · patients with hypertension

First‐line thiazides showed no clear difference in total serious adverse events Duration: 1.75 to 3 years compared with first‐line calcium channel blockers (low certainty).

1 finding from 1 review

Aspirin vs placebo

Total mortality · adults with hypertension (patients with atrial fibrillation, congestive heart failure, pre‐eclampsia or pulmonary hypertension were…

Aspirin showed no clear difference in total mortality compared with placebo (low certainty).

1 finding from 1 review

Aspirin vs placebo

Cardiovascular mortality · adults with hypertension (patients with atrial fibrillation, congestive heart failure, pre‐eclampsia or pulmonary hypertension were…

Aspirin showed no clear difference in cardiovascular mortality compared with placebo (low certainty).

1 finding from 1 review

Aspirin vs placebo

Non‐fatal cardiovascular events · adults with hypertension (patients with atrial fibrillation, congestive heart failure, pre‐eclampsia or pulmonary hypertension were…

Aspirin may leads to lower non‐fatal cardiovascular events compared with placebo (low certainty).

1 finding from 1 review

Aspirin vs placebo

Major bleedinga · adults with hypertension (patients with atrial fibrillation, congestive heart failure, pre‐eclampsia or pulmonary hypertension were…

Aspirin leads to higher major bleedinga compared with placebo (high certainty).

1 finding from 1 review

Aspirin vs placebo

Cardiovascular events · adults with hypertension (patients with atrial fibrillation, congestive heart failure, pre‐eclampsia or pulmonary hypertension were…

Aspirin may leads to lower all cardiovascular events compared with placebo (low certainty).

1 finding from 1 review