One of the area's where Wikipedia is not performing optimally is in the area of mental health. I am working towards an editathon on the subject. The aim is to consider information in multiple languages not only Dutch.

What I am looking for is how we can measure the impact it has on traffic. After all I am interested in the whole of the subject not only in the articles that are updated or written.

My problem is in two: what is the best way of identifying a subject as broad as mental health and is it possible to get historic information on traffic?

Thanks,

      GerardM

PS I am working on Wikidata on the subject.