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Difference in severity of side-effects, expressed as GEE regression coefficients, between low-expressing (CC) and high-expressing (GG/CG)) genotype groups for the HTR1A receptor. The comparisons between groups for diarrhea 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).
