This page contains basic R and Microsoft Excel functions to perform the methods described in Ghosh, Zou and Wright "Estimating odds ratios in genome scans: and approximate likelihood approach." We are creating a user-friendly web-based servlet to perform this approach, but meanwhile either the R or Excel versions can be used. R users can run examplescript.R, which reads the source code from functions.R and then reproduces the results from the top line of Table 1 in the manuscript. The Microsoft Excel spreadsheet should be self-explanatory, if you know that betahat is the log odds ratio estimate, z is the z-statistic, and c is the threshold z-value used in the study. Arpita Ghosh Fred Wright fwright@bios.unc.edu