Certainly it is early for the initiative to have had effect, at least in the journals which have included it in the instructions for their authors; and our study does not have the statistical capacity to establish comparisons.
Ciertamente, es pronto para que la iniciativa tenga efecto, al menos en las revistas que la han incluido en las instrucciones para sus autores, y nuestro estudio no tiene potencia estadística para establecer comparaciones.