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. 2023 Jan 24:68:1605495.
doi: 10.3389/ijph.2023.1605495. eCollection 2023.

Regional Health Disparities in Hypertension-Related Hospitalization of Hypertensive Patients: A Nationwide Population-Based Nested Case-Control Study

Woo-Ri Lee  1 , Jun Hyuk Koo  2 , Ji Yun Jeong  3 , Min Su Kim  2 , Ki-Bong Yoo  4
Affiliations

Regional Health Disparities in Hypertension-Related Hospitalization of Hypertensive Patients: A Nationwide Population-Based Nested Case-Control Study

Woo-Ri Lee et al. Int J Public Health. .

Abstract

Objective: This study aims to explore regional health disparities in hypertension-related hospitalizations and confirm this difference according to the states of continuity of care (COC). Methods: We used the National Health Insurance Service National Sample Cohort data from 2002 to 2019. The dependent variable, hypertension-related hospitalization, included hospitalization for hypertensive diseases (I10-I13, I15), ischemic heart disease (I20-I25), and cerebrovascular disease (I60-I69). Nested case-control matching was performed according to age, sex, and income level. We compared hypertension-related hospitalization fractions in urban and rural areas by classifying them according to the state of COC and analyzed them using conditional logistic regression suitable for matched data. Results: The odds of hypertension-related hospitalization of hypertensive patients were higher in the rural areas than in the urban areas; however, as the COC increased, the difference decreased. There was no change in the results according to the COC observation period. Conclusion: To reduce regional health disparities, both the promotion of COC and the improvement of the quality of primary care must be achieved.

Keywords: NHIS-NSC; continuity of care; hypertension; hypertension-related hospitalization; nested case-control study; regional health disparity.

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Conflict of interest statement

The authors declare that they do not have any conflicts of interest.

Figures

FIGURE 1
FIGURE 1
Study population selection process (South Korea, 2002–2019).
See this image and copyright information in PMC

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