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