Statistics Made Easy 6.3: Testing U-Shaped Relationships in Stata

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In this video, we explore how to test for (inverted) U-shaped relationships in Stata, a special type of moderation analysis. We will calculate interaction terms, marginal effects, and visualize the results.

For additional background reading, I recommend these papers:

You can download the datasets, additional explanations, and the Stata "Do Files" for the tutorial by following this link:
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Hey, great video! I used the fracreg probit command and i want to test if there is a u-shape now but the utest command doesn't work after this regression, it only works after using xtreg regression. Do i have to use xtreg to test for a u-shape?

louisa