Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews · Headline outcomes only

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 2 · 100%High 0 · 0%

Smoking cessation Self‐reported abstinence (majority) · callers to quitlines

The intervention probably leads to higher smoking cessation Self‐reported abstinence (majority) (moderate certainty).

1 finding from 1 review

Telephone counselling for smoking cessation 2019 · Cochrane Headline outcomes only
RR 1.38 [1.19, 1.61]
14 studies · 32484 participants
Moderate

Smoking cessation Self‐reported abstinence (majority) · smokers not calling quitlines

The intervention probably leads to higher smoking cessation Self‐reported abstinence (majority) (moderate certainty).

1 finding from 1 review

Telephone counselling for smoking cessation 2019 · Cochrane Headline outcomes only
RR 1.25 [1.15, 1.35]
65 studies · 41233 participants
Moderate