Counting within a variable

[Oscar Weinzettl]

Sorry if this is trivial, but I can not find anything online nor seem to get it to work myself. I have a data set made of 2 waves that I have combined. The variable "survey" denotes if the observation is from the first (=1) or the second wave (=2).

How do I do a simple count within the survey variable to check if the number of observations of the first wave (1) are roughly equal to those in the second wave (2)?

[Marcos Almeida]

Please read the FAQ. There you'll find advice about sharing data/command/output.

That said, just type - help count - in the command window, for the command - count - allows for "if" as well as "by".

[William Lisowski]

Adding to the advice from Marcos, another approach is

tab survey

[Arpit Raswant]

In addition to above useful posts, you may use the following approach to get more information on the variable. Hope this helps.

sum survey, detail