Stata Logic

Stata supports the following logic structures for programming.

Contents

  1. Stata Logic
    1. Operators
    2. Conditional Processing
    3. By

Operators

Conditional Processing

By

The by command prefix causes a command to be repeated within groups.

A common usecase of the by structure is for identifying duplciate cases. 

sort foo bar baz
by foo bar baz: generate byte duplicate = cond(_N==1, 0, _n)

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