Hello- I am looking for R function that will give me some proper confidence intervals on un-transformed mean prediction when performing a linear regression on log-transformed data. I am referring to the UMVU estimate, the el-shaarawi and viveros (1997) estimate, or the Wu, wong, and Wei (2005) estimates, for example. Can't find anything, hoping not to have to program it myself! Thanks- Alice Shelly Environmental Statistician TerraStat Consulting Group 5002 Lodge View Lane Austin, TX 78731 (206) 362-3299 alice@blarg.net [[alternative HTML version deleted]]