Equity of health care financing in South Korea: 1990-2016.

BMC Health Serv Res · 2021 · PMC8665605 · PMID 34895226

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a slightly increasing trendno p-value reported

However, a slightly increasing trend was noted in the regressivity since 2008.

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an increasing trendno p-value reported

The OOP payments for outpatient treatment and medication are regressive compared to the ability to pay for all years, and the regressivity showed an increasing trend towards the end of the period.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.