<qa>  What was the focus of PDC?Built upon two prior studies: the Cleveland Alzheimers Managed Care Demonstration Bass, Clark, Looman, McCarthy, Eckert, 2003 and the Chronic Care Networks for Alzheimers Disease CCNAD Maslow Bass, 2003; Maslow Selstad, 2001, PDC was a 5-year research investigation that tested the effectiveness of a telephone-based, innovative care-coordination intervention designed to address the unmet care needs of Veterans with dementia and their family caregivers across all dementia stages. PDC was implemented through formal partnerships between the VA medical centers and local Alzheimers Association AA chapters. Essential features of PDC included: 1 formal partnerships between VA medical centers and Alzheimers Association Chapters; 2 a multidimensional assessment and treatment approach, 3 ongoing monitoring and long-term relationships with families; and 4 a computerized information system to guide service delivery and fidelity monitoring. For a complete description of the PDC intervention protocol please see Judge, Bass, Snow, Wilson, Morgan, Looman, McCarthy, and Kunik 2010. 