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What do systematic reviews say?

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Evidence found and GRADE certainty

929 questions · 946 findings · 295 reviews · Headline outcomes only

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No studies found 150 · 15.9%GRADE not reported 47 · 5%Very low 312 · 33%Low 262 · 27.7%Moderate 138 · 14.6%High 37 · 3.9%

Macrolides vs tetracycline

Exacerbations (number of people experiencing ≥ 1 exacerbations) · patients with chronic obstructive pulmonary disease

Macrolide showed no clear difference in number of participants experiencing one or more exacerbations… compared with tetracycline (low certainty).

1 finding from 1 review

Macrolide+tetracycline vs macrolides

Number of people experiencing one or more exacerbations, Drug resistance/microbial sensitivity (as reported by trialists), including emergence of atypical bacteria, Number of participants colonised with Pseudomonas aeruginosa · patients with chronic obstructive pulmonary disease

The review found no eligible studies for this question.

1 finding from 1 review

Radix Sophorae flavescentis vs placebo or no intervention

Non‐serious adverse events Maximum · chronic hepatitis B

It is very uncertain whether radix Sophorae flavescentis changes proportion of participants with 1 or more adverse events considered… compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Acupuncture vs no intervention

Proportion of participants with 1 or more serious adverse events · chronic hepatitis B

The review found no eligible studies for this question.

1 finding from 1 review

Acupuncture vs no intervention

Non‐serious adverse events Maximum · chronic hepatitis B

It is very uncertain whether acupuncture changes proportion of participants with 1 or more adverse events considered… compared with no intervention (very low certainty).

1 finding from 1 review

Summary of findings ‐ Intranasal lorazepam vs intramuscular paraldehyde

Additional drugs required to terminate the seizure: 2 or more additional anticonvulsants required · Children with acute tonic‐clonic seizures

Summary of findings ‐ Intranasal lorazepam may leads to lower additional drugs required to terminate the seizure: 2 or more… compared with intramuscular paraldehyde (low certainty).

1 finding from 1 review

Exercise vs no exercise

Pain ‐ long term (12 months and beyond) Pain subscale of Michigan Hand Outcomes Questionnaire (0 to 100 points, higher score means more pain) · rheumatoid arthritis of the hand
1 finding from 1 review

Intervention not reported

Primary outcome 2: participant‐ or parent‐rated participant quality of life score at the end of active treatment Scales used: DLQI, IDQoL, Skindex‐29, CDLQI. On those scales, the higher the score, the more severely the quality of life is affected ... · male and female patients 0 to 55 years of age with physician‐diagnosed eczema
1 finding from 1 review

Intervention not reported

Primary outcome 2: participant‐ or parent‐rated family quality of life score at the end of active treatment Scale used: DFI, FDLQI. On those scales, the higher the score, the more severely the quality of life is affected Duration of · male and female patients 0 to 55 years of age with physician‐diagnosed eczema
1 finding from 1 review