Findings

What do systematic reviews say?

13 questions · 13 findings · 2 reviews · Airways

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No studies found 3 · 23.1%GRADE not reported 0 · 0%Very low 0 · 0%Low 6 · 46.2%Moderate 4 · 30.8%High 0 · 0%

Inactivated influenza vaccine vs placebo

Protection from experiencing an asthma exacerbation of any cause over the influenza season ‐ children (over 6 years of age) given inactivated influenza vaccine · people with asthma

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 696 participants
Moderate

Inactivated influenza vaccine vs placebo

Protection from experiencing an influenza‐related asthma exacerbation over the influenza season ‐ children (over 6 years of age) given inactivated influenza vaccine · people with asthma

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 696 participants
Moderate

Inactivated influenza vaccine vs placebo

Asthma exacerbation (adverse effects) caused by inactivated influenza vaccine, measured in the first 2 weeks following vaccination ‐ children (over 3 years of age) given inactivated influenza vaccine · people with asthma

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 712 participants
Moderate

Inactivated influenza vaccine vs placebo

Protection from experiencing an asthma exacerbation of any cause over the influenza season ‐ adults given inactivated influenza vaccine · people with asthma

The review found no eligible studies for this question.

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Inactivated influenza vaccine vs placebo

Protection from experiencing an influenza‐related asthma exacerbation over the influenza season ‐ adults given inactivated influenza vaccine · people with asthma

The review found no eligible studies for this question.

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Inactivated influenza vaccine vs placebo

Asthma exacerbation (adverse effects) caused by inactivated influenza vaccine, measured in the first 2 weeks following vaccination ‐ adults given inactivated influenza vaccine · people with asthma

1 finding from 1 review

Vaccines for preventing influenza in people with asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 1526 participants
Moderate

Influenza vaccine vs placebo

Total exacerbations per participant · COPD

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 180 participants
Low

Influenza vaccine vs placebo

Early exacerbations per participant · COPD

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 180 participants
Low

Influenza vaccine vs placebo

Late exacerbations per participant · COPD

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 180 participants
Low

Influenza vaccine vs placebo

Days disability from respiratory illness · COPD

The review found no eligible studies for this question.

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Influenza vaccine vs placebo

Hospital admissions · COPD

Influenza vaccine showed no clear difference in hospital admissions compared with placebo (low certainty).

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
OR 0.33 [0.09, 1.24]
2 studies · 180 participants
Low

Influenza vaccine vs placebo

All‐cause mortality · COPD

Influenza vaccine showed no clear difference in mortality compared with placebo (low certainty).

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
OR 0.87 [0.28, 2.7]
2 studies · 180 participants
Low

Influenza vaccine vs placebo

Local effects at injection site · COPD

Influenza vaccine may leads to higher local effects at injection site compared with placebo (low certainty).

1 finding from 1 review

Influenza vaccine for chronic obstructive pulmonary disease (COPD) 2018 · Cochrane Headline outcomes only
OR 5.57 [1.75, 17.71]
1 study · 125 participants
Low