The effect of increasing the coinsurance rate on outpatient utilization of healthcare services in South Korea

Lee, Hyo Jung; Jang, Sung-In; Park, Eun-Cheol

doi:10.1186/s12913-017-2076-8

BMC Health Services Research

Table 3 The results of the segmented regression analysis

From: The effect of increasing the coinsurance rate on outpatient utilization of healthcare services in South Korea

	Time		2011 policy		Time after 2011 policy
	Estimate*	p-value	Estimate*	p-value	Estimate*	p-value
Total
Percentage of general or tertiary hospital utilization	−0.0044	0.0658	−1.6184	<0.0001	0.0036	0.1786
General and tertiary hospital utilization
Number of outpatient visits	0.0001	0.0034	−0.0114	<0.0001	0.0001	0.3159
Outpatient medical costs	1.3140	0.7452	−2913.4	<0.0001	−23.684	<0.0001
Hospitals and clinic utilization
Number of outpatient visits	0.0001	0.9998	0.0580	<0.0001	−0.0018	<0.0001
Outpatient medical costs	106.41	<0.0001	−591.35	<0.0001	−97.722	<0.0001
Acute bronchitis, unspecified (J20.9)
Percentage of general and tertiary hospital utilization	−0.0086	0.0500	−0.6044	<0.0001	0.0167	0.0010
General and tertiary hospital utilization
Number of outpatient visits	0.0001	0.5675	−0.0060	<0.0001	0.0001	0.0983
Outpatient medical costs	6.5779	0.3676	−1144.6	<0.0001	−9.5789	0.2411
Hospital and clinic utilization
Number of outpatient visits	0.0023	<0.0001	0.0110	0.0481	−0.0041	<0.0001
Outpatient medical costs	127.14	<0.0001	−1057.7	<0.0001	−123.28	<0.0001
Essential hypertension (I10.0, I10.9)
Percentage of general and tertiary hospital utilization	−0.0164	0.0001	−1.0330	<0.0001	−0.0154	0.0029
General and tertiary hospital utilization
Number of outpatient visits	−0.0001	0.1233	−0.0095	<0.0001	−0.0003	<0.0001
Outpatient medical costs	−14.902	0.0543	−2381.0	<0.0001	−51.712	<0.0001
Hospital and clinic utilization
Number of outpatient visits	0.0002	0.3478	0.0363	<0.0001	−0.0014	<0.0001
Outpatient medical costs	182.60	<0.0001	−877.34	<0.0001	−202.80	<0.0001

*Adjusted for age, sex, income, region, CCI, disability, and all cause admission during the previous year

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