| Aim: to trace genes that are important for cardiovascular risk factors. A full genome scan has already been made for one of the risk factors. Such scan entails the testing of 35000 genetic markers. Regular (asymptotic) significance levels are unreliable with so many tests. Empirical significance levels can be determined by 1000 permutations of the data set under the null hypothesis. On a normal processor this would take some months. Therefore cluster computers are needed. |