Hi All, What is the best way to deal with a 1:M matched case control study in microarray analysis? Is there any package that can handle conditional regression? Alternatively, would there be a way to incorporate the matching information using limma and the contrast c(1, -1/M, ... , -1/M)? Thanks, Elena "EMF <coh.org>" made the following annotations. ---------------------------------------------------------------------- -------- SECURITY/CONFIDENTIALITY WARNING: This message and any atta...{{dropped}}