uhc city plan audit follow up, aon hewitt. >> i'm going to ask that you move forward with your presentation. >> today's presentation was closing the 2014 medical plan audit in addition there were many questions asked during our last presentation regarding the methodology and extrapolation. page 2. just to give a recap plan evaluation method ology. we looked at 220 claims for the entire year of 2013. the sample size there was a question about statistic relevancy. sample size 95 percent plus or minus 7.5 percent. we'll get into presentation on how we broke down the claims for strata and the amount of claims we looked at. there was a question in our last presentation about the high dollar rate. we looked at 10 high dollar claims and the stage reasonable -- renal disease claims and our sample of 10 claims will not statistically relevant, did you tell provide a highlight and overview of how the uhc process those types of claims. an example, one of the errors we did identify on the audit was from our targeted claims. just from those 10 claims we looked at for each set, we were able to determine a