Not if you only want to know if they found that immigration depresses wages or not. If that is all you want to know, I agree. However, for any sensible discussion you also want to know how much and in the bit you posted you see they said a 10% change in the proportion of immigrant:native workers - which needs far more than a 10% change in the nunber of immigrant workers by the way - is estimated bt the model at 1.88% change in wages. In the context of around 14% devaluation.
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