I am planning to do an analysis of both allelic and genotypic level of association of an particular SNP with a disease via case control study.But, I can not understand which statistical test should I choose for additive model of genotype related association study.Previously, in one paper, I have found that the they have chosen Cochran–Armitage test for this but, in SPSS there is no option for this.Can I select Jonckheere trend test as an alternative one? Do anyone have any idea for additive model analysis through SPSS? Any suggestion would be appreciated.
Thank you