Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

109 questions · 110 findings · 14 reviews

No studies found 16 · 14.5%GRADE not reported 16 · 14.5%Very low 25 · 22.7%Low 16 · 14.5%Moderate 25 · 22.7%High 12 · 10.9%

Statins vs placebo

Stroke · 17,802 patients with low to normal levels of low density lipoprotein (LDL) cholesterol (< 130 mg/dL)

Statin probably leads to lower any stroke compared with placebo (moderate certainty).

1 finding from 1 review

Statins vs placebo

Death · 17,802 patients with low to normal levels of low density lipoprotein (LDL) cholesterol (< 130 mg/dL)

Statin probably leads to lower death compared with placebo (moderate certainty).

1 finding from 1 review

Statins vs placebo

Any serious adverse event · 17,802 patients with low to normal levels of low density lipoprotein (LDL) cholesterol (< 130 mg/dL)

Statin showed no clear difference in any serious adverse event compared with placebo (moderate certainty).

1 finding from 1 review

Atorvastatin vs placebo

Asthma exacerbations requiring hospitalisation or a course of steroids · people with asthma

The review found no eligible studies for this question.

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    no estimate extracted
    Studies not reported
    No studies found

Atorvastatin vs placebo

Health‐related quality of life · people with asthma

The review found no eligible studies for this question.

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    no estimate extracted
    Studies not reported
    No studies found

Atorvastatin vs placebo

Change in morning PEF (L/min) at endpoint · people with asthma

It is very uncertain whether atorvastatin changes lung function: change in morning PEF compared with placebo (very low certainty).

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    MD 12.32
    1 study · 60 participants
    Very low

Atorvastatin vs placebo

Change from baseline in pre‐bronchodilator FEV1 · people with asthma

It is very uncertain whether atorvastatin changes lung function: change in FEV1 (pre) compared with placebo (very low certainty).

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    MD 0.13
    1 study · 60 participants
    Very low

Atorvastatin vs placebo

Lung function: change in FEV1 (post) · people with asthma

It is very uncertain whether atorvastatin changes lung function: change in FEV1 (post) compared with placebo (very low certainty).

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    MD 0.11
    1 study · 60 participants
    Very low

Atorvastatin vs placebo

Serious adverse events or adverse events · people with asthma

The review found no eligible studies for this question.

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    no estimate extracted
    Studies not reported
    No studies found

Atorvastatin vs placebo

Asthma control · people with asthma

It is very uncertain whether atorvastatin changes asthma control: change in ACQ compared with placebo (very low certainty).

1 finding from 1 review
  • Statins for asthma 2020 · Cochrane Headline outcomes only
    MD 0.41
    1 study · 60 participants
    Very low