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  • 2SLS with IV using Paneldata

    Hello,

    I got the folllwing problem:
    I am analyzing the influence of Environmental (E), Social (S), Governance (G) and ESG (together) on the Deal Premium in M&A-Deals.
    Therefore I collected the following Data:

    Click image for larger version

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    I made a Principal Component Factor analysis and created Instrument Variables for the different dimensions (Environmental (E), Social (S), Governance (G) and ESG-together) each for the years of 2015 until 2021. As result I got the E_index(2015-2021), S_index, G_index and ESG_index.
    Then I used ivreg2 and some other control variables to analyze the influence of the created Index on the DealPremium and got some great results.
    Now I got the problem, that I want to analyze the evolution of E,S,G & ESG over time.
    Is it possible that I create a dummyvariable for the different years and analyze the influence E, S, G & ESG had in 2015, 2016,... based on my instrumental variables?
    Thanks for your time!

    Kind regards
    Jan
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