Interpersonal Continuity of Care and Care Outcomes: A Critical Review Drs. Saultz and Lochner

PURPOSE We wanted to undertake a critical review of the medical literature regarding the relationships between interpersonal continuity of care and the outcomes and cost of health care. METHODS A search of the MEDLINE database from 1966 through April 2002 was conducted by the primary author to fi nd original English language articles focusing on interpersonal continuity of patient care. The articles were then screened to select those articles focusing on the relationship between interpersonal continuity and the outcome or cost of care. These articles were systematically reviewed and analyzed by both authors for study method, measurement technique, and quality of evidence. RESULTS Forty-one research articles reporting the results of 40 studies were identifi ed that addressed the relationship between interpersonal continuity and care outcome. A total of 81 separate care outcomes were reported in these articles. Fifty-one outcomes were signifi cantly improved and only 2 were signifi cantly worse in association with interpersonal continuity. Twenty-two articles reported the results of 20 studies of the relationship between interpersonal continuity and cost. These studies reported signifi cantly lower cost or utilization for 35 of 41 cost variables in association with interpersonal continuity. CONCLUSIONS Although the available literature refl ects persistent methodologic problems, it is likely that a signifi cant association exists between interpersonal continuity and improved preventive care and reduced hospitalization. Future research in this area should address more specifi c and measurable outcomes and more direct costs and should seek to defi ne and measure interpersonal continuity more explicitly. Ann Fam Med 2005;3:159-166. DOI: 10.1370/afm.285.