BMC Health Services Research

Table 5 Coefficients and standard errors calculated by multiple linear regression analysis

From: The effects of continuity of care on hospital utilization in patients with knee osteoarthritis: analysis of Nationwide insurance data

Category	Unadjusted			Adjusted^a
Category	Coefficient	SE	P-value	Coefficient	SE	P-value
Gender
Male
Female	0.283	0.004	< 0.0001	0.044	0.003	< 0.0001
Age (yr)
≤ 29
30–39	−0.010	0.008	0.185	−0.073	0.005	< 0.0001
40–49	0.189	0.007	< 0.0001	−0.060	0.005	< 0.0001
50–59	0.469	0.006	< 0.0001	0.011	0.004	0.008
60–69	0.751	0.006	< 0.0001	0.096	0.005	< 0.0001
≥ 70	0.877	0.006	< 0.0001	0.129	0.005	< 0.0001
Payer type
National health insurance
Medicaid	0.414	0.010	< 0.0001	0.174	0.007	< 0.0001
Others	0.599	0.073	< 0.0001	0.220	0.048	< 0.0001
Hospital type
General hospital	0.088	0.011	< 0.0001	0.072	0.010	< 0.0001
Hospital	0.028	0.030	0.349	0.204	0.020	< 0.0001
Clinic	0.151	0.009	< 0.0001	0.262	0.012	< 0.0001
LTC	0.062	0.029	0.033	0.180	0.021	< 0.0001
Oriental hospital	0.158	0.010	< 0.0001	0.361	0.012	< 0.0001
Oriental clinic
Region
Urban	0.038	0.004	< 0.0001	0.031	0.003	< 0.0001
Rural
Ownership
Public
Corporate	0.204	0.025	< 0.0001	0.219	0.016	< 0.0001
Private	0.091	0.024	< 0.0001	0.271	0.016	< 0.0001
COC
0.76–1.00
0.51–0.75	−1.348	0.003	< 0.0001	−0.136	0.020	< 0.0001
0.26–0.50	−0.134	0.020	< 0.0001	−1.333	0.003	< 0.0001
0.00–0.25	0.692	0.006	< 0.0001	0.677	0.006	< 0.0001
Low (< 3 visits)	0.618	0.004	< 0.0001	0.608	0.004	< 0.0001

^aThe Adj R-Sq of model was 0.583
Abbreviations: SE standard error

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