--- carmen gamarra <[email protected]> wrote:
> My problem is not missing data specifically. Within countries poorly
> many deaths from cancer of the uterine cervix and uterine corpus are
> inadequately coded as �uterine cancer not otherwise specified�
>
> Please note: We know that cases coded as "unspecified" belong to
> uterine cancer, and we need redistribute proportionately all these
> cases by allocating the deaths to either uterine cervix or uterine
> corpus cancer according to the age-specific proportions specified as
> uterine cervix and uterine corpus cancer in each year of study
> according to recommendations Pan American Health Organization (PAHO).
>
> The PAHO recommendations are that all cases of cancer of the uterus
> unspecified be redistributed and I need to know which would command
> in STATA order to perform these distributions.
>
> Age group: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80 and over
> Three type of uterine cancer ("unspecified" uterine cancer, and
> uterine cervix and uterine corpus cancer)
> 3 years of study (2004, 2005 and 2006).
This is still a missing data problem: you want to use information that
is not recorded. Information that is not recorded is missing. The fact
that the observations weren't given a missing value, does not mean that
this is not a missing data problem.
What the PAHO is proposing could be turned into a sensible multiple
imputation model, but this is very tricky business and you should not
attempt to do that until you have carefully studied the references I
have given you.
-- Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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