RE: Missing values [was: RE: st: simple question]

[Richard Williams <Richard.A.Williams.5@ND.edu>]

At 04:54 PM 6/2/2004 -0700, David E Moore wrote:
> Is it worth pointing out that SAS, which may be the most widely used stat
> package on the planet, uses missing value codes almost exactly the same 
> way that
> Stata uses them.  S-Plus uses an internal code (similar to old-style Stata's
Good points.  I'm not a SAS user, so I'll concede my original complaint.

Is it also the case in SAS that if you say something like

regress y x if age > 40

you also get the missing cases on age included?  That is the main other 
thing I dislike about Stata's handling of MD, although it is easy enough to 
work around so long as you are careful.

Mostly, though, if Stat/Transfer gets better at handling MD conversions, 
I'll be happy.


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