moderndid.load_mpdta#

moderndid.load_mpdta() → DataFrame[source]#

Load the County Teen Employment dataset for multiple time period DiD analysis.

This dataset contains county-level teen employment rates from 2003-2007 with staggered treatment timing (minimum wage increases). States were first treated in 2004, 2006, or 2007.

The dataset is a balanced panel of 500 counties observed across 5 years, for a total of 2,500 observations.

Returns:
polars.DataFrame

A DataFrame with the following columns:

  • year: Year (2003-2007)

  • countyreal: County identifier

  • lpop: Log of county population

  • lemp: Log of county-level teen employment (outcome variable)

  • first.treat: Period when state first increased minimum wage (2004, 2006, 2007, or 0 for never-treated)

  • treat: Treatment indicator (1 if treated, 0 if control)

References

[1]

Callaway, B., & Sant’Anna, P. H. (2021). Difference-in-differences with multiple time periods. Journal of Econometrics, 225(2), 200-230.

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