Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

451 questions · 491 findings · 71 reviews

No studies found 104 · 21.2%GRADE not reported 54 · 11%Very low 156 · 31.8%Low 115 · 23.4%Moderate 51 · 10.4%High 11 · 2.2%

Behavioural intervention vs control

Smoking cessation at time of surgery ‐ Intensive behavioural intervention (multiple contacts, initiated at least 4 weeks before surgery) · People awaiting surgery

Behavioural intervention probably leads to higher smoking cessation at time of surgery ‐ Intensive behavioural… compared with control (moderate certainty).

1 finding from 1 review

Behavioural intervention vs control

Smoking cessation at time of surgery ‐ Brief behavioural intervention · People awaiting surgery

Behavioural intervention leads to higher smoking cessation at time of surgery ‐ Brief behavioural intervention compared with control (high certainty).

1 finding from 1 review

Behavioural intervention vs control

Postoperative morbidity: Any complication ‐ Intensive intervention · People awaiting surgery

Behavioural intervention probably leads to lower postoperative morbidity: Any complication ‐ Intensive intervention compared with control (moderate certainty).

1 finding from 1 review

Behavioural intervention vs control

Postoperative morbidity: Any complication ‐ Brief intervention · People awaiting surgery

Behavioural intervention showed no clear difference in postoperative morbidity: Any complication ‐ Brief intervention compared with control (moderate certainty).

1 finding from 1 review

Behavioural intervention vs minimal control

Smoking cessation · young people

Behavioural interventions showed no clear difference in individual counselling (in‐person) vs control Smoking cessation compared with minimal control (low certainty).

5 findings from 1 review
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Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Behavioural outcomes (reported and/or other measures, e.g. data tracking toothbrushes and collecting food wrappers) · Children aged 4 to 12 years attending primary school

The review found no eligible studies for this question.

1 finding from 1 review

Individual level cognitive behavioural intervention vs no intervention

Self‐reported victimisation. Post intervention. · Adult workers with a learning disability

It is very uncertain whether individual level cognitive behavioural intervention changes self‐reported victimisation. Post intervention. compared with no intervention (very low certainty).

2 findings from 1 review

Individual level cognitive behavioural intervention vs no intervention

Self‐reported perpetration. Post intervention. · Adult workers with a learning disability

It is very uncertain whether individual level cognitive behavioural intervention changes self‐reported perpetration. Post intervention. compared with no intervention (very low certainty).

2 findings from 1 review

Behavioural intervention vs control

QoL · adults with obstructive sleep apnoea
2 findings from 1 review

Interventions delivered by dental professionals vs control

Smoking cessation · participants who used tobacco products

It is very uncertain whether interventions delivered by dental professionals changes multi‐session behavioural support versus usual care, brief advice,… compared with control (very low certainty).

4 findings from 1 review
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