Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

510 questions · 513 findings · 62 reviews · Headline outcomes only

No studies found 96 · 18.7%GRADE not reported 13 · 2.5%Very low 181 · 35.3%Low 121 · 23.6%Moderate 69 · 13.5%High 33 · 6.4%

Provider‐ or system‐based interventions vs no intervention or another intervention

Intervention to increase staff influenza vaccination rate versus no intervention · people aged 60 years and older living in the community

Provider‐ or system‐based interventions showed no clear difference in intervention to increase staff influenza vaccination rate versus no… compared with no intervention or another intervention (high certainty).

1 finding from 1 review

Increasing community demand vs no intervention or another intervention

Client reminder and recall (letter + leaflet or postcard) compared to letter · people aged 60 years and older living in the community

Increasing community demand leads to higher client reminder and recall (letter + leaflet or postcard) compared… compared with no intervention or another intervention (high certainty).

1 finding from 1 review

Increasing community demand vs no intervention or another intervention

Client reminder and recall (telephone call from retired teacher plus educational brochure) compared to usual publicity · people aged 60 years and older living in the community

Increasing community demand leads to higher client reminder and recall (telephone call from retired teacher plus… compared with no intervention or another intervention (high certainty).

1 finding from 1 review

Increasing community demand vs no intervention or another intervention

Client reminder and recall (telephone invitation) compared to invitation to patient when "dropped in" to clinic · people aged 60 years and older living in the community

Increasing community demand probably leads to higher client reminder and recall (telephone invitation) compared to… compared with no intervention or another intervention (moderate certainty).

1 finding from 1 review

Increasing community demand vs no intervention or another intervention

Brochure + lottery for free groceries compared to no intervention · people aged 60 years and older living in the community

Increasing community demand showed no clear difference in brochure + lottery for free groceries compared to no intervention compared with no intervention or another intervention (high certainty).

1 finding from 1 review

Increasing community demand vs no intervention or another intervention

Questionnaires to clients about attitudes · people aged 60 years and older living in the community

Increasing community demand leads to higher questionnaires to clients about attitudes compared with no intervention or another intervention (high certainty).

1 finding from 1 review