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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Am J Geriatr Psychiatry. 2013 Sep 8;22(10):971–979. doi: 10.1016/j.jagp.2013.07.003

Figure 1.

Figure 1

Difference in severity of side-effects, expressed as GEE regression coefficients, between low-expressing (LA−) and high-expressing (LA+) genotype groups for the triallelic haplotype of the serotonin transporter promoter polymorphism (5-HTTLPR). The comparisons between groups for dry mouth and diminished sexual desire are statistically significant at p<.05 between GEE regression coefficients for low- and high-expressing genotypes. A Z test was used to test for the equality of regression coefficients (30).