In 91% of cases, the chemical-dependent family member was male. Members of the subject group presented more often with mental disorders, digestive system problems, obstetrical problems, injuries, and poorly defined conditions. Also, they were more likely to have nonreferred visits, to have specialist visits, and to use laboratory services than population-matched controls. The subject group's use of specialists and laboratory services amounted to twice the cost of the control group's use of these services.