Effectiveness of hospital emergency department regionalization and categorization policy on appropriate patient emergency care use: a nationwide observational study in Taiwan

Table 3 The segmented autoregressive integrated moving average model analysis of the percentage of ED visit

	Regionalization Policy Intervention			Categorization Policy Intervention
	β	SE	P Value	β	SE	P Value
Baseline trend	0.06	0.05	0.25	−0.08	0.06	0.16
Level change after policy intervention	−0.79	0.74	0.28	−0.08	1.09	0.95
Trend change after policy intervention	−0.07	0.06	0.23	0.01	0.06	0.92
Percentage of female	0.66	0.33	0.05	0.27	0.30	0.37
Mean Charlson score	30.83	2.42	< 0.001	33.88	3.93	< 0.001
Percentage of residence in urban	0.01	0.41	0.98	0.17	0.42	0.68
Percentage of insufficient emergency medical resources area	0.26	0.39	0.51	0.18	0.52	0.73
Percentage of weekend	0.04	0.05	0.36	0.06	0.07	0.40
Percentage of income level at quintile 1 (Lowest)	0.08	0.04	0.04	−0.19	0.95	0.84
Percentage of the dependents of the insured individuals	−0.13	0.14	0.35	−0.29	0.12	0.02
AR1	0.05	0.17	0.77	−0.04	0.19	0.82

ISSN: 1472-6963