Comparison of out-of-pocket expenditure and catastrophic health expenditure for severe disease by the health security system: based on end-stage renal disease in South Korea

Table 4 Means of annual out-of-pocket expenditure ($^a)) by ANCOVA^b) for pooled 6-year data

Classification	NHI^c)	MA^d)	F score	p-value	NHI:MA
Classification	Mean ± SE	Mean ± SE	F score	p-value	NHI:MA
OOP medical expenditure
Emergency room visits (n = 76)	141.7 ± 34.1	34.2 ± 78.7	1.34	0.250	4.1:1
Admission (n = 127)	2020.8 ± 251.8	692.1 ± 432.0	6.11	0.01	2.9:1
Outpatient department visits (n = 302)	1120.6 ± 75.1	290.2 ± 145.5	24.7	< 0.001	3.9:1
Total out-of-pocket expenditure (n = 304) ^e)	2154.2 ± 142.2	657.5 ± 274.5	22.4	< 0.001	3.2:1

^a)South Korean Won (KRW) converted to USD ($) based on the exchange rate on July 1, 2008
^b)Adjusted for gender, age, type of healthcare service, and number of comorbidities
^c)National Health Insurance
^d)Medical Aid, Medical Aid type 1 (n = 55) and Medical Aid type 2 (n = 13)
^e)Includes expenditure for emergency room visits, admissions, outpatient department visits and prescribed drugs

ISSN: 1475-9276