I genotyped several SNPs of a gene and investigated the association of all possible two and three marker haplotypes with the disease. In this case, how do you adjust the ' P' value for multiple testing? These tests are related.
I recently dealt with Bonferroni corrections. Determine the threshold by deviding 0.05 to the number of SNPs or haplotypes (basically to the number of individual ANOVA tests you have performed) you have analized in that study!
many thanks, yes i found that bonferroni corrections has been used in several papers. May i ask which program you use? i am considering that as the tested haplotypes are related, whether bonferroni is conservative?
Maybe you can use the online software of SHEsis(http://analysis.bio-x.cn/SHEsisMain.htm) which can generate the frequencies of single SNP and the haplotype of several SNPs.