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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

535 questions in 56 reviews · Hypertension

current versions
No studies 37 · 6.9%Ungraded 34 · 6.4%Very low 91 · 17%Low 161 · 30.1%Moderate 136 · 25.4%High 76 · 14.2%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Beta‐blockers vs renin‐angiotensin system inhibitors
Total mortality
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.1 [0.98, 1.24]3 studies · 10828 participantsModerate
Beta‐blockers vs renin‐angiotensin system inhibitors
Total cardiovascular disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 1 [0.72, 1.38]3 studies · 10828 participantsLow
Beta‐blockers vs renin‐angiotensin system inhibitors
Total stroke
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.3 [1.11, 1.53]2 studies · 9951 participantsModerate
Beta‐blockers vs renin‐angiotensin system inhibitors
Total coronary heart disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 0.9 [0.76, 1.06]2 studies · 9951 participantsLow
Beta‐blockers vs placebo
Total cardiovascular disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 0.88 [0.79, 0.97]4 studies · 23613 participantsLow
Beta‐blockers vs renin‐angiotensin system inhibitors
Withdrawal due to adverse effect
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.41 [1.29, 1.54]2 studies · 9951 participantsModerate
Beta‐blockers vs placebo
Total stroke
Beta‐blockers for hypertension (2017) · Cochrane
RR 0.8 [0.66, 0.96]4 studies · 23613 participantsLow
Beta‐blockers vs placebo
Total coronary heart disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 0.93 [0.81, 1.07]4 studies · 23613 participantsModerate
Beta‐blockers vs placebo
Withdrawal due to adverse effect
Beta‐blockers for hypertension (2017) · Cochrane
RR 3.38 [0.82, 13.95]3 studies · 22729 participantsLow
Beta‐blockers vs diuretics
Total mortality
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.04 [0.91, 1.19]5 studies · 18241 participantsModerate
Beta‐blockers vs diuretics
Total cardiovascular disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.13 [0.99, 1.28]4 studies · 18135 participantsModerate
Beta‐blockers vs diuretics
Total stroke
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.17 [0.65, 2.09]4 studies · 18135 participantsLow
Beta‐blockers vs diuretics
Total coronary heart disease
Beta‐blockers for hypertension (2017) · Cochrane
RR 1.12 [0.82, 1.54]4 studies · 18135 participantsLow
Intervention NR
Systolic BP ‐ Aliskiren 75 mg vs. placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted5 studies · 1100 participantsModerate
Intervention NR
Systolic BP ‐ Aliskiren 150 mg vs. placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted12 studies · 3786 participantsModerate
Intervention NR
Systolic BP ‐ Aliskiren 300 mg vs. placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted10 studies · 3009 participantsModerate
Intervention NR
Systolic BP ‐ Aliskiren 600 mg vs. placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted2 studies · 393 participantsLow
Intervention NR
Diastolic BP ‐ Aliskiren 75 mg vs placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted5 studies · 1100 participantsModerate
Intervention NR
Diastolic BP ‐ Aliskiren 150 mg vs placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted12 studies · 3783 participantsModerate
Intervention NR
Diastolic BP ‐ Aliskiren 300 mg vs placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted10 studies · 3001 participantsModerate
Intervention NR
Diastolic BP ‐ Aliskiren 600 mg vs placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
no estimate extracted2 studies · 393 participantsLow
Intervention NR
Diarrhoea ‐ Aliskiren 600 mg vs placebo · primary hypertension
Blood pressure lowering efficacy of renin inhibitors for primary hypertension (2017) · Cochrane
RR 7 [2.48, 19.72]2 studies · 592 participantsLow
Antihypertensive drug therapy vs control
All‐cause mortality · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
RR 0.94 [0.77, 1.13]5 studies · 16776 participantsLow
Antihypertensive drug therapy vs control
Total cardiovascular mortality + morbidity · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
RR 0.78 [0.67, 0.91]6 studies · 17278 participantsLow
Antihypertensive drug therapy vs control
Cerebrovascular mortality + morbidity · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
RR 0.46 [0.34, 0.64]6 studies · 17278 participantsLow
Antihypertensive drug therapy vs control
Coronary heart disease mortality + morbidity · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
RR 0.99 [0.82, 1.19]4 studies · 16241 participantsLow
Antihypertensive drug therapy vs control
Withdrawal due to adverse events · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
RR 4.82 [1.67, 13.92]3 studies · 1223 participantsVery low
Antihypertensive drug therapy vs control
Decrease in SBP5 at end of 1 year · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
no estimate extracted3 studies · 14845 participantsVery low
Antihypertensive drug therapy vs control
Decrease in DBP6 at end of 1 year · adults aged 18‐59 years with primary hypertension (mild to moderate systolic or diastolic hypertension)
Pharmacotherapy for hypertension in adults aged 18 to 59 years (2017) · Cochrane
no estimate extracted4 studies · 15857 participantsVery low
Intervention NR
Systolic blood pressure clinical digital sphygmomanometer · adults with or without hypertension
Effect of cocoa on blood pressure (2017) · Cochrane
no estimate extracted35 studies · 1804 participantsModerate
Intervention NR
Diastolic blood pressure clinical digital sphygmomanometer · adults with or without hypertension
Effect of cocoa on blood pressure (2017) · Cochrane
no estimate extracted34 studies · 1772 participantsModerate
Intervention NR
Withdrawals due to adverse effects · adults with or without hypertension
Effect of cocoa on blood pressure (2017) · Cochrane
no estimate extracted31 studies · 1514 participantsModerate
Intervention NR
Effect on systolic blood pressure (mean difference in systolic blood pressure) · adults with primary hypertension
Eplerenone for hypertension (2017) · Cochrane
no estimate extracted5 studies · 1437 participantsModerate
Intervention NR
Effect on diastolic blood pressure (mean difference in diastolic blood pressure) · adults with primary hypertension
Eplerenone for hypertension (2017) · Cochrane
no estimate extracted5 studies · 1437 participantsModerate
Intervention NR
Any adverse event · adults with primary hypertension
Eplerenone for hypertension (2017) · Cochrane
OR 1.07 [0.82, 1.41]3 studies · 1105 participantsLow
Intervention NR
Adverse event leading to withdrawal · adults with primary hypertension
Eplerenone for hypertension (2017) · Cochrane
OR 1.1 [0.47, 2.55]3 studies · 1105 participantsLow
Higher BP target (< 150‐160/95‐105 mmHg) vs lower BP target (< 140/90 mmHg)
All‐cause mortality · older adults with primary hypertension
Blood pressure targets for hypertension in older adults (2017) · Cochrane
RR 1.24 [0.99, 1.54]3 studies · 8221 participantsLow
Higher BP target (< 150‐160/95‐105 mmHg) vs lower BP target (< 140/90 mmHg)
Stroke · older adults with primary hypertension
Blood pressure targets for hypertension in older adults (2017) · Cochrane
RR 1.25 [0.94, 1.67]3 studies · 8221 participantsLow
Higher BP target (< 150‐160/95‐105 mmHg) vs lower BP target (< 140/90 mmHg)
Cardiovascular serious adverse events · older adults with primary hypertension
Blood pressure targets for hypertension in older adults (2017) · Cochrane
RR 1.19 [0.98, 1.45]3 studies · 8221 participantsLow
Higher BP target (< 150‐160/95‐105 mmHg) vs lower BP target (< 140/90 mmHg)
Withdrawals due to adverse effects · older adults with primary hypertension
Blood pressure targets for hypertension in older adults (2017) · Cochrane
RR 0.83 [0.58, 1.19]2 studies · 7497 participantsLow
Intervention NR
End of treatment SBP (over 12 weeks) · patients with primary hypertension
Blood pressure lowering efficacy of coenzyme Q10 for primary hypertension (2016) · Cochrane
no estimate extracted2 studies · 50 participantsModerate
Intervention NR
End of treatment DBP (over 12 weeks) · patients with primary hypertension
Blood pressure lowering efficacy of coenzyme Q10 for primary hypertension (2016) · Cochrane
no estimate extracted2 studies · 50 participantsModerate
Intervention NR
Withdrawals due to adverse effects · patients with primary hypertension
Blood pressure lowering efficacy of coenzyme Q10 for primary hypertension (2016) · Cochrane
no estimate extracted1 study · 30 participantsUngraded
Intervention NR
Systolic blood pressure · People with primary hypertension
Blood pressure lowering efficacy of beta‐1 selective beta blockers for primary hypertension (2016) · Cochrane
no estimate extracted47 studies · 5246 participantsLow
Intervention NR
Diastolic blood pressure · People with primary hypertension
Blood pressure lowering efficacy of beta‐1 selective beta blockers for primary hypertension (2016) · Cochrane
no estimate extracted48 studies · 5316 participantsLow
Intervention NR
Heart rate · People with primary hypertension
Blood pressure lowering efficacy of beta‐1 selective beta blockers for primary hypertension (2016) · Cochrane
no estimate extracted33 studies · 3407 participantsLow
Intervention NR
Pulse pressure · People with primary hypertension
Blood pressure lowering efficacy of beta‐1 selective beta blockers for primary hypertension (2016) · Cochrane
no estimate extracted47 studies · 5246 participantsVery low
Intervention NR
WDAE · People with primary hypertension
Blood pressure lowering efficacy of beta‐1 selective beta blockers for primary hypertension (2016) · Cochrane
no estimate extracted3 studies · 2618 participantsLow
Antihypertensive pharmacotherapy vs control
Sudden cardiac death ( · people with hypertension (defined as baseline systolic resting blood pressure ≥ 140 mmHg and/or resting diastolic…
Antihypertensive pharmacotherapy for prevention of sudden cardiac death in hypertensive individuals (2016) · Cochrane
RR 0.96 [0.81, 1.15]15 studies · 39908 participantsModerate
Antihypertensive pharmacotherapy vs control
Non‐fatal myocardial infarction ( · people with hypertension (defined as baseline systolic resting blood pressure ≥ 140 mmHg and/or resting diastolic…
Antihypertensive pharmacotherapy for prevention of sudden cardiac death in hypertensive individuals (2016) · Cochrane
RR 0.85 [0.74, 0.98]15 studies · 39908 participantsModerate