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Fig. 4 | BMC Genomics

Fig. 4

From: Combined genetic influence of the nicotinic receptor gene cluster CHRNA5/A3/B4 on nicotine dependence

Fig. 4

Distribution of the residuals probabilities of nicotine dependence score (FTND 0 or 4~ 10) associated with each of rs880395 (a), rs16969968 (b), rs1948 (c) and rs4887074 (d) alleles. To test heteroskedasticity of the residuals, the Breusch-Pagan test was performed. Among four SNPs, rs16969968 and rs4887074 are significantly associated with the variability of the residuals (**p < .01, ***p < .001)

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