On Sun, Nov 4, 2012 at 8:19 PM, Qunzi Zhang wrote:
> The final goal is to count the nr. non-missing values
number of missing values on varname1, varname2, varname3, etc. in the
entire dataset:
count if missing(varname1, varname2, varname3, etc.)
number of missing values on varname1, varname2, etc. by some grouping
variable (id).
gen byte miss = missing(varname1, varname2, etc.)
bysort id : egen nmiss = total(nmiss)
drop miss
-- Maarten
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany
http://www.maartenbuis.nl
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