Heavier smoking may lead to a relative increase in waist circumference: evidence for a causal relationship from a Mendelian randomisation meta-analysis. The CARTA consortium.

BMJ Open · 2015 · PMC4538266 · PMID 26264275

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hedged sentence

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closest p · 0.0× alpha

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boldest claim

The sentences

highly significantp=3.85×10 −7actually significant

The waist circumference was higher per minor allele in never-smokers: +0.23% (95% CI 0.09% to 0.36%; p=0.0012), non-significantly related in former smokers −0.07% (95% CI −0.24% to 0.09%; p=0.37) and lower in current smokers −0.40% (95% CI −0.57 to −0.22 p=1.69×10 −5 ): differences among smoking groups were highly significant (p=3.85×10 −7 ; see online supplementary figure S2.

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