[Babase] Changing Immigrant Male Census Data

Karl O. Pinc kop at meme.com
Wed Nov 18 10:34:05 EST 2009


On 11/18/2009 09:20:11 AM, Lacey Maryott Roerish wrote:
  I
> have a list of 25 immigrant males who have a matgrp of 9, but who,
> instead
> of being in group 9 from birth until their entry date, are actually
> shown to
> be in their 'entry group' at birth.  I have, for all of these males,
> the
> list of actual dates when they should enter our population.
>     What I am not sure of is, if I simply change the date prior to
> their
> entry date to group 9... will it interpolate back to 9 for the rest 
> of
> their
> young lives.... do I have to make incremental changes, do I just
> change
> their group at birth date and group at the day before entry?
>     I have tried reading through the documentation but it isn't
> obvious to
> me what the best method is to get babase to understand that these
> males are
> really in grp 9 until their entry dates.

What are their CENSUS.Status codes?  That's always what
you need to go back to when there are questions about
interpolation.  My suspicion is
that they are the "old style" ones from Susan's data,
and that there's a row in CENSUS for every day where
the individuals are in the wrong group.

Interpolation won't put an individual in a group more
than 14 days away from a census date.  The only way to have
this happen is to use the "old style" status values and
put a row in CENSUS for every day.  The "old style" as
well as the manual (M) Status don't interpolate at all.

See the documentation on CENSUS.Status values.  (And of course
the mongo chapter on interpolation.)

IIRC Daphnie (sp?) also put in some manual (M) values to
do interpolation manually back in Babase 1.0 when interpolation
was not doing the right thing.  These may not be "right".

Really the "old style" census codes (taken directly from
Susan's male data for SPSS (I think) in punchcard format
(IIRC) should probably be reviewed and removed from the
data.

Karl <kop at meme.com>
Free Software:  "You don't pay back, you pay forward."
                 -- Robert A. Heinlein




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