In comparing 2 GAM models are there some guidelines to determine which model might be a better fit by comparing the 2 UBRE scores? I assume that a larger value is indicative of a better fit? What magnitude of difference is a significant one? I imagine that one could also use the percent of explained deviance. Is that a reliable statistic? Are there any other statistics that one would use for model selection? Jean G. Orelien Senior Biostatistician ******************************************************************* SciMetrika, LLC 2 Davis Drive RTP, NC 27709 Tel: (919)765-0017 (1210) Fax: (919)990-8561 Email: jorelien@scimetrika.com Website: http://www.scimetrika.com ******************************************************************* [[alternative HTML version deleted]]