In each document that we publish, we can only present a certain amount of data. Regarding this study, it includes all the persons who suffered from mental problems during the past year. The sample gives details of the characteristics of the 1,220 persons. Theoretically, we could cross-reference a certain amount of information, as you suggest. In any case, it is true that this information is not contained in this document.
On March 4th, 2008. See this statement in context.