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It is unclear whether the results of these studies would apply to people exposed to radon in their homes

NICOLE SACKLEY: But I think it's interesting, the ways in which Americans require a defense of the child in order to regulate a product

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An instrumental variable (IV) comprised of 113 single nucleotide polymorphisms (SNPs) associated with smoking initiation is associated with decreased hemoglobin (HGB: Effect = -0.07 standard deviation units [95% confidence interval = -0.03 to -0.10 SD units], P = 1x10 -4 ), hematocrit (HCT: Effect = -0.06 [-0.03 - -0.09] SD units, P = 4x10 -4 ), and red blood cell count (RBC: Effect = -0.05 [-0.02 - -0.09] SD units, P = 5x10 -3 ) without impacting platelet count (P = 0.9) or white blood cell count (P = 0.6)

Second, to limit selection bias and improve the precision of the study, two balanced groups (22,480 participants with gout and 22,480 participants without gout) were paired according to their likelihood of having gout, which could imitate randomized experiments