Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,429 questions · 3,558 findings · 436 reviews

No studies found 660 · 18.5%GRADE not reported 375 · 10.5%Very low 727 · 20.4%Low 887 · 24.9%Moderate 709 · 19.9%High 200 · 5.6%

Intervention not reported

Smoking cessation at ≥ 6 months · tobacco smokers (general population, low income, inpatients and outpatients with mixed diagnoses)

The intervention showed no clear difference in smoking cessation at ≥ 6 months (low certainty).

1 finding from 1 review

Motivational interviewing vs another smoking cessation intervention

Smoking cessation · tobacco smokers (general population, adolescents, offenders, homeless, substance users, hospital inpatients, HIV‐positive)

Motivational interviewing showed no clear difference in smoking cessation at ≥ 6 months compared with another smoking cessation intervention (low certainty).

1 finding from 1 review

Ovarian stimulating drugs in subfertile women vs subfertile women not treated or versus general population

Risk of invasive ovarian cancer in subfertile women exposed to ovarian stimulating drug vs unexposed women (summary of cohort studies suggesting increased risk) · subfertile women
2 findings from 1 review

Ovarian stimulating drugs in subfertile women vs subfertile women not treated or versus general population

Risk of borderline ovarian cancer in subfertile women exposed to ovarian stimulating drugs vs unexposed women (summary of case‐control studies suggesting an increase) · subfertile women
2 findings from 1 review