Impact of market competition on continuity of care and hospital admissions for asthmatic children: A longitudinal analysis of nationwide health insurance data 2009-2013

Kyoung Hee Cho, Eun Cheol Park, Young Soon Nam, Seon Heui Lee, Chung Mo Nam, Sang Gyu Lee

Research output: Contribution to journalReview articlepeer-review

4 Citations (Scopus)

Abstract

Background: Ambulatory care-sensitive conditions, including asthma, can be managed with timely and effective outpatient care, thereby reducing the need for hospitalization. Objective: This study assessed the relationship between market competition, continuity of care (COC), and hospital admissions in asthmatic children according to their health care provider. Methods: A longitudinal design was employed with a 5-year follow-up period, between 2009 and 2013, under a Korean universal health insurance program. A total of 253 geographical regions were included in the analysis, according to data from the Korean Statistical Office. Data from 9,997 patients, aged ≤ 12 years, were included. We measured the COC over a 5-year period using the Usual Provider Continuity (UPC) index. Random intercept models were calculated to assess the temporal and multilevel relationship between market competition, COC, and hospital admission rate. Results: Of the 9,997 patients, 243 (2.4%) were admitted to the hospital in 2009. In the multilevel regression analysis, as the Herfindahl-Hirschman Index increased by 1,000 points (denoting decreased competitiveness), UPC scores also increased (β = 0.001; p < 0.0001). In multilevel logistic regression analysis, the adjusted odds ratio (OR) for hospital admissions for individuals with lower COC scores (≥ 2 ambulatory visits and a UPC index score of < 1) was 3.61 (95% CI: 2.98-4.38) relative to the reference group (≥ 2 ambulatory visits and a UPC index score of 1). Conclusions: Market competition appears to reduce COC; decreased COC was associated with a higher OR for hospital admissions.

Original languageEnglish
Article numbere0150926
JournalPloS one
Volume11
Issue number3
DOIs
Publication statusPublished - 2016 Mar

Bibliographical note

Publisher Copyright:
© 2016 Cho et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

All Science Journal Classification (ASJC) codes

  • General

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