title: Effect of diabetic case management intervention on health service utilization in Korea.
abstract: This study is to estimate the effectiveness of a diabetic case management programme on health-care service utilization. The study population included 6007 as the intervention group and 956,766 as the control group. As the indicators of health-care service utilization, numbers of medical ambulatory consultations, days of medication prescribed and medical expenses for one year were used, and we analysed the claim data of the health insurance from 2005 to 2007. The study population was classified into three subgroups based on the number of medical ambulatory consultations per year before this intervention. In the under-serviced subgroup, the intervention group showed a significant increase in the number of consultations (3.2), days of prescribed medication (66.4) and medical expenses (287,900 KRW) compared with the control group. Conversely, in the over-serviced subgroup, the intervention group showed a less decrease days of prescribed medication (1.6) compared with the control group. This showed that the case management programme led the intervention group to optimize their utilization of health-care services by subgroups. It is necessary to evaluate the appropriateness of health-care usage and clinical outcome to show the direct effectiveness of the case management programme by subgroups.
authors.affiliation: Bigdata Steering Department, National Health Insurance Service, Seoul, Korea.
authors.forename: Soon Ae
authors.initials: SA
authors.lastname: Shin
authors.affiliation: Department of Preventive Medicine, School of Medicine, Konkuk University, Seoul, Korea.
authors.forename: Hyeongsu
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Preventive Medicine, School of Medicine, Konkuk University, Seoul, Korea.
authors.forename: Kunsei
authors.initials: K
authors.lastname: Lee
authors.affiliation: Health Sector Development, Western Pacific Region, WHO, Manila, Philippines.
authors.forename: Vivian
authors.initials: V
authors.lastname: Lin
authors.affiliation: Department of Public Health, School of Public Health & Human Biosciences, La Trobe University, Melbourne, Victoria, Australia.
authors.forename: George
authors.initials: G
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019090:Case Management; D003920:Diabetes Mellitus / Q000628:therapy*; D005260:Female; D006296:Health Services / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015397:Program Evaluation; D056910:Republic of Korea
keywords: case management; diabetes; health service utilization