Tab missing values + by

[joan marc]

Dear All,

I want to tab the amount of missing values of a certain variable by some category. For example, tabmiss X by Y. I can't find this.

Thank you all

Joan Marc

[William Lisowski]

It seems to me that

tabulate X Y if missing(X), missing

would do what you ask. For example

. sysuse auto, clear
(1978 Automobile Data)

. tab rep78 foreign if missing(rep78), missing

    Repair |
    Record |       Car type
      1978 |  Domestic    Foreign |     Total
-----------+----------------------+----------
         . |         4          1 |         5 
-----------+----------------------+----------
     Total |         4          1 |         5

[Nick Cox]

tabmiss is from the UCLA website, as you are asked to explain.

In addition to William's helpful answer,

see also

e.g. http://www.statalist.org/forums/foru...aging-missings
and

net describe dm0085, from(http://www.stata-journal.com/software/sj15-4)