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What do systematic reviews say?

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Evidence found and GRADE certainty

2 questions · 2 findings · 1 reviews

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Active NRT vs placebo ‐ DRD4 (exon 3 48 bp) ‐ non‐Hispanic white

6‐Month abstinence ‐ heterozygous · people who smoke

Active NRT showed no clear difference in 6‐Month abstinence ‐ heterozygous compared with placebo ‐ DRD4 (exon 3 48 bp) ‐ non‐Hispanic white (low certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs2036527 ‐ non‐Hispanic black or African American

6‐Month abstinence ‐ heterozygous or homozygous minor · people who smoke

Active NRT showed no clear difference in 6‐Month abstinence ‐ heterozygous or homozygous minor compared with placebo ‐ rs2036527 ‐ non‐Hispanic black or African American (moderate certainty).

1 finding from 1 review