BJ Data Tech Solution

Specialized on Data processing, Data management Implementation plan, Data Collection tools - electronic and paper base, Data cleaning specifications, Data extraction, Data transformation, Data load, Analytical Datasets, and Data analysis. BJ Data Tech Solutions teaches on design and developing Electronic Data Collection Tools using CSPro, and STATA commands for data manipulation. Setting up Data Management systems using modern data technologies such as Relational Databases, C#, PHP and Android.

egen var1= count(var), by(id quarter) - generating missing values
egen var1= count(var), by(id quarter) - generating missing values

Hello,

I have a dataset which is organised by id and quarter. I want to create a variable, based on a variable of the dataset, and it should look something like this:
egen var1=count(var) if var==1 & var==2, by(id quarter)
This type of code has worked for me previously, but now it is generating missing values.
Does anyone know what could be the problem?

Thank you

BJ Data Tech Solution

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