Hi All, I think I may be digging up an old discussion here but I can't see any update relating to version VI...
I've got some data where some observations are marked as BLQ. Looking through the documentation it seems that BLQ observations can be used by specifying a interval in which the observation must sit, for example 0 to LOQ. The likelihood of the observation is then calculated using this interval. These boundaries can be set using YLO and YUP in $ERR. From trial and error it seems that these should only be set for BLQ observations by using IF (DV.LT.LOQ) YUP=LOQ etc in $ERR. Is this correct? Also, according to the documentation there are CTLO and CTUP that seem to have similar descriptions. What's the difference? Regards James
