In original studies, you will not have information on later updates. So, original studies that have an updated value will rank badly on this criterion even though the study might be the best that there is (which is why its value is updated and used).
In original studies, you will not have information on later updates. So, original studies that have an updated value will rank badly on this criterion even though the study might be the best that there is (which is why its value is updated and used).