Do Reduced Copayments Affect Mortality after Surgery due to Stroke? An Interrupted Time Series Analysis of a National Cohort Sampled in 2003-2012

Kyu Tae Han, Seung Ju Kim, Sun Jung Kim, Ji Won Yoo, Euncheol Park

Research output: Contribution to journalArticle

Abstract

Background: The South Korean government introduced a policy in 2 phases, in September 2005 and in January 2010, for reducing copayments for patients with critical diseases, including stroke, to prevent excessive medical expenditures and to ease economic barriers. Previous studies of the effect of this policy were focused primarily on cancer. Therefore, we investigated the relationship between this policy and 1-year mortality after surgery among patients with stroke. Methods: We used data from the Korean National Health Insurance sampling cohort (n = 2173 in 2003-2012) and performed an interrupted time series analysis. Results: Approximately 26% of the patients died within 1 year after surgery. The time trends after reducing copayments from 10% to 5% (phase 2) were inversely associated with risk of 1-year mortality (relative risk =.855, 95% confidence interval:.749-.975; P =.0196). In addition, this inverse association was greater in patients with low incomes, of older ages, and with higher Charlson comorbidity indices. Conclusions: The introduction of a policy for reducing copayments to ease excessive cost burdens for patients with stroke was positively associated with a reduced risk of 1-year mortality after surgical treatment due to stroke. On the basis of our results, health policy makers should make an effort to identify vulnerable populations and to overcome economic barriers for providing effective alternatives to ensure patients receive optimal health care.

Original languageEnglish
Pages (from-to)1502-1510
Number of pages9
JournalJournal of Stroke and Cerebrovascular Diseases
Volume27
Issue number6
DOIs
Publication statusPublished - 2018 Jun 1

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Stroke
Mortality
Economics
National Health Programs
Vulnerable Populations
Health Expenditures
Health Policy
Administrative Personnel
Interrupted Time Series Analysis
Comorbidity
Confidence Intervals
Delivery of Health Care
Costs and Cost Analysis
Neoplasms
Therapeutics

All Science Journal Classification (ASJC) codes

  • Surgery
  • Rehabilitation
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine

Cite this

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title = "Do Reduced Copayments Affect Mortality after Surgery due to Stroke? An Interrupted Time Series Analysis of a National Cohort Sampled in 2003-2012",
abstract = "Background: The South Korean government introduced a policy in 2 phases, in September 2005 and in January 2010, for reducing copayments for patients with critical diseases, including stroke, to prevent excessive medical expenditures and to ease economic barriers. Previous studies of the effect of this policy were focused primarily on cancer. Therefore, we investigated the relationship between this policy and 1-year mortality after surgery among patients with stroke. Methods: We used data from the Korean National Health Insurance sampling cohort (n = 2173 in 2003-2012) and performed an interrupted time series analysis. Results: Approximately 26{\%} of the patients died within 1 year after surgery. The time trends after reducing copayments from 10{\%} to 5{\%} (phase 2) were inversely associated with risk of 1-year mortality (relative risk =.855, 95{\%} confidence interval:.749-.975; P =.0196). In addition, this inverse association was greater in patients with low incomes, of older ages, and with higher Charlson comorbidity indices. Conclusions: The introduction of a policy for reducing copayments to ease excessive cost burdens for patients with stroke was positively associated with a reduced risk of 1-year mortality after surgical treatment due to stroke. On the basis of our results, health policy makers should make an effort to identify vulnerable populations and to overcome economic barriers for providing effective alternatives to ensure patients receive optimal health care.",
author = "Han, {Kyu Tae} and Kim, {Seung Ju} and Kim, {Sun Jung} and Yoo, {Ji Won} and Euncheol Park",
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Do Reduced Copayments Affect Mortality after Surgery due to Stroke? An Interrupted Time Series Analysis of a National Cohort Sampled in 2003-2012. / Han, Kyu Tae; Kim, Seung Ju; Kim, Sun Jung; Yoo, Ji Won; Park, Euncheol.

In: Journal of Stroke and Cerebrovascular Diseases, Vol. 27, No. 6, 01.06.2018, p. 1502-1510.

Research output: Contribution to journalArticle

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T1 - Do Reduced Copayments Affect Mortality after Surgery due to Stroke? An Interrupted Time Series Analysis of a National Cohort Sampled in 2003-2012

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AU - Kim, Sun Jung

AU - Yoo, Ji Won

AU - Park, Euncheol

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