Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

9 questions · 9 findings · 6 reviews · Headline outcomes only

No studies found 1 · 11.1%GRADE not reported 1 · 11.1%Very low 1 · 11.1%Low 2 · 22.2%Moderate 4 · 44.4%High 0 · 0%

Live zoster vaccine vs placebo

Participants with adverse events: 1 or more serious adverse events regardless of type of storage of the vaccine Clinical or laboratory criteria · healthy older adults aged ≥ 60 years

Live zoster vaccine showed no clear difference in participants with adverse events: 1 or more serious adverse events… compared with placebo (moderate certainty).

1 finding from 1 review

Antihypertensive drug therapy vs placebo or no treatment

Total serious adverse events · adults (18 years of age or older) with hypertension‐induced left ventricular hypertrophy

It is very uncertain whether antihypertensive therapy changes total serious adverse events compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Recombinant zoster vaccine vs placebo

Participants with adverse events ‐ serious adverse events Clinical or laboratory criteria · healthy older adults aged ≥ 60 years

Recombinant zoster vaccine showed no clear difference in participants with adverse events ‐ serious adverse eventsClinical or… compared with placebo (moderate certainty).

1 finding from 1 review

SiT for maintenance/relief vs higher‐dose ICS/LABA + SABA

Patients with serious adverse events · Studies recruited adults and adolescents aged 12 and older with chronic asthma

SiT for maintenance/relief showed no clear difference in patients with serious adverse events compared with higher‐dose ICS/LABA + SABA (moderate certainty).

1 finding from 1 review

Loratadine 10 mg vs placebo (4‐week intervention)

Primary outcome 2. Proportion of participants reporting adverse effects and serious adverse events throughout the study period · adults with eczema

Loratadine 10 mg/d showed no clear difference in primary outcome 2. Proportion of participants reporting adverse… compared with placebo (4‐week intervention) (low certainty).

1 finding from 1 review