Well-documented

This case is well-documented.

Source: tatoeba (3859343)

The lack of meaningful connection with students from the host culture is associated with many well-documented costs, including poorer sociocultural adaptation, greater difficulty navigating the trials of higher education, and less satisfaction with the sojourn experience.

Source: tatoeba (8986759)

In the twenty years since fibromyalgia was identified and given a name, much has been written about the disease. Much free and well-documented information about the disease is available. And groups have been created to help doctors who treat the disease and patients who suffer from it.

Source: tatoeba (12278656)

People are assumed to follow the maxim and submaxim, but cross-cultural differences are well-documented regarding the enactment of the submaxim.

Source: wiktionary