
Hi,I'm developing a case-control study on genotyping data.I have fitted a logistic regression with covariates on this dataset, to pinpoint association between some SNPs and response to a drug treatment.  
I do not have a sample for confirmation of results, so I would perform a internal validation, with random subsampling of dataset.I believed that DAAG package might be right for me, but I found that this package perform a cross-validation to select best suitable model.Contact me for any questions.
Thank you in advance.Best regards,Martina  		 	   		  
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