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. Author manuscript; available in PMC: 2014 Dec 24.

Published in final edited form as: Hum Genet. 2011 Oct 18;131(6):1009–1021. doi: 10.1007/s00439-011-1102-x

Fig. 1 — Chromosomal and QQ plots for smoking behaviors. Statistical significance of each SNP is scaled as −log₁₀ (p value). Red dotted line indicates threshold in Discovery sample (p < 10^—5), and blue dotted line indicates p value 10^—4. We plotted the observed −log₁₀-scaled association results versus −log₁₀-scaled expected association results in QQ plots. Chromosomal and QQ plots for ND phenotype (a), SI-1 phenotype (b), and SI-2 phenotype (c)

Fig. 1 — Chromosomal and QQ plots for smoking behaviors. Statistical significance of each SNP is scaled as −log₁₀ (p value). Red dotted line indicates threshold in Discovery sample (p < 10^—5), and blue dotted line indicates p value 10^—4. We plotted the observed −log₁₀-scaled association results versus −log₁₀-scaled expected association results in QQ plots. Chromosomal and QQ plots for ND phenotype (a), SI-1 phenotype (b), and SI-2 phenotype (c)