Analysis of Effect of Employment Stability by Income Level on Health Care Use

Abstract

The purpose of this study is to analyze the factors influencing health care use by income level and employment stability. Health care use is confined here to outpatient care use and this study examines its quantitative (number of outpatient use per year) and qualitative (outpatient health care expenses per year) characteristics. This study used the Korea Health Panel Survey (2013-2018) for data. A total of 433,238 cases (11,909 subjects) were extracted based on employment status and medical security type. In order to estimate the effect of income, the subjects were divided into 4 income groups. We employed Panel Negative Binomial Regression and Fixed-effect Panel Regression to identify factors of the number of health care services used and the volume of health care expenses, respectively. Our analysis found that factors affecting health care use were gender, age, education level, married status, employment status, employment insurance payments, health insurance eligibility, industrial accident insurance payments, private insurance payment, and chronic disease status. In particular, as for employment status, which is the main interest of this study, it was confirmed that temporary-daily workers and self-employed use less health care than regular-full time worker with relatively high employment stability. Also, there were significant differences in some variables by income sub-groups in health care use. This study suggests that policy design that considers not only income but also employment stability is needed to ensure the national health security such as the policy of reorganizing national health insurance imposition and expansion of employment insurance and industrial accident insurance range.