Can I run ardl model ardl y x1 x2, even when all the variables are stationary at first difference not at level?

If all my dependent and independent variables are stationary at first difference NOT at level, SHOULD I REPLACE (ardl y x1 x2) with (ardl d.y d.x1 d.x2)? when there is no cointegration and I want...

15 April 2023 3,377 7 View