Guess what folks, after reviewing my assay data closely, it occured to me that it is relatively nonlinear. So I've been reviewing some notes from a short course on applied nonlinear regression taught by George Milliken. While these may not be available to most of you, he cites a related ref. in Milliken and DeBruin (1978)"A procedure to test hypotheses for nonlinear models", Comm.Stat.Theor. Meth.,A(71):65-79. Al ============================================= Date: Fri, 13 Jul 2001 11:26:00 -0700 (PDT) From: Alfred Barron <[EMAIL PROTECTED]> Subject: parallel-line assay I have to compare treatment dose-response assay data. This can be done using regression as in Finney's book (among other references). However, I understand that non-parametric tests for the parallelism of 2 regression lines was coded in SAS in the late 70s. While I have some old proc matrix code described in SAS SUGI 4 (1979) to do it, does anyone have something more current that is online somewhere or that they could share ? My study involves bacterial strains measured under different treatment conditions. thanks, Al Barron Metuchen, NJ __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ ================================================================= Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =================================================================
