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| (99) | Therefore, a significant strength of the difference-in-differences approach is that it can filter out changes unrelated to the passing-on related price effect that occurred during the same period as the passing-on. However, it rests on the assumption that other factors, in the example above the price of plastic, affect the markets similarly. If this is not the case, an econometric implementation of the difference-in-differences technique may be necessary. Implementations of such techniques are described in more detail in section 5.1.2 below.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.