Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

901 questions · 1,073 findings · 138 reviews

No studies found 166 · 15.5%GRADE not reported 310 · 28.9%Very low 213 · 19.9%Low 227 · 21.2%Moderate 132 · 12.3%High 25 · 2.3%

Higher‐dose vs lower‐dose nicotine patch

Smoking cessation · people who smoke

Higher‐dose showed no clear difference in smoking cessation ‐ 42/44 mg versus 21/22 mg (24‐hour patches) compared with lower‐dose nicotine patch (moderate certainty).

3 findings from 1 review

Higher‐dose vs lower‐dose nicotine patch

SAEs · people who smoke

Higher‐dose showed no clear difference in overall SAEs ‐ 42/44 mg versus 21/22 mg (24 hr patches) compared with lower‐dose nicotine patch (low certainty).

2 findings from 1 review

Higher‐dose vs lower‐dose nicotine patch

Treatment withdrawals ‐ 21 mg versus 14 mg (24‐hour patches) · people who smoke

Higher‐dose showed no clear difference in treatment withdrawals ‐ 21 mg versus 14 mg (24‐hour patches) compared with lower‐dose nicotine patch (low certainty).

1 finding from 1 review

Higher‐dose vs lower dose

Intermediate syndrome · patients with acute organophosphate pesticide poisoning

It is very uncertain whether higher dose changes intermediate syndrome compared with lower dose (very low certainty).

1 finding from 1 review

Higher national income (GNI per capita) vs Lower national income (GNI categories: middle <=$15,000 / high $15,001-25,000 / very high >$25,000)

Caries experience (mean DMFT) · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)

Mean DMFT in 12-year-olds rises as national income falls: 0.90 (very high income), 2.38 (high income), 3.30 (middle income) (Figure 2); not GRADE-rated.

3 findings from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Overall survival at 5‐year · women with early poor prognosis breast cancer

High‐dose chemotherapy showed no clear difference in overall survival at 5‐year compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Event‐free survival · women with early poor prognosis breast cancer

High‐dose chemotherapy showed no clear difference in event‐free survival at 5‐year compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Treatment‐related mortality · women with early poor prognosis breast cancer

High‐dose chemotherapy leads to higher treatment‐related mortality compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review