Table 4.

Regression Model of Healthcare Costs of Inpatients with Illicit Drug SUD

	Variable	Parameter Estimate	Standard Error	Pr > |t|	% Change to Cost
	Intercept	8.3235	0.0059	<.0001
Gender	Female	− 0.0005	0.0027	0.8552
	Male (ref.)	–	–	–
Age	Agea	0.0067	0.0001	<.0001	0.68%
Ethnicity	Hispanica	−0.0250	0.0046	<.0001	−2.47%
	Non-Hispanic (ref.)	–	–	–
Race	Blacka	−0.0394	0.0034	<.0001	−3.87%
	Othera	0.1217	0.0064	<.0001	12.94%
	White (ref.)	–	–	–
Rural	Rural	−0.0075	0.0070	0.2864
	Urban (ref.)	–	–	–
Payer	Uninsureda	−0.1035	0.0044	<.0001	−9.83%
	Medicarea	0.0281	0.0043	<.0001	2.85%
	Medicaida	−0.0701	0.0044	<.0001	−6.77%
	Other Insurancea	−0.0529	0.0067	<.0001	−5.15%
	Commercial (ref.)	–	–	–
LOS	LOSa	0.0501	0.0001	<.0001	5.14%
Trauma Alert	Trauma Alerta	1.1036	0.0133	<.0001	201.51%
	Non-Trauma Alert (ref.)	–	–	–
Physical Comorbidities	Liver Diseasea	0.1868	0.0052	<.0001	20.54%
	Severe Liver Diseasea	0.2642	0.0145	<.0001	30.23%
	HIV/AIDSa	0.1325	0.0108	<.0001	14.17%
	None (ref.)	–	–	–
Mental Comorbidities	Anxiety	−0.0023	0.0031	0.4604
	Mooda	−0.1366	0.0110	<.0001	−12.77%
	Schizophrenia and Personalitya	−0.2184	0.0050	<.0001	−19.62%
	Bipolara	0.0993	0.0050	<.0001	10.43%
	Depressiona	0.0555	0.0035	<.0001	5.71%
	Conducta	−0.4158	0.0286	<.0001	−34.02%
	PTSDa	−0.1844	0.0057	<.0001	−16.84%
	ADHDa	−0.1264	0.0102	<.0001	−11.87%
	None (ref.)	–	–	–
Drugs	Opioidsa	0.2103	0.0042	<.0001	23.40%
	Sedativesa	−0.1602	0.0091	<.0001	−14.80%
	Cocainea	−0.0711	0.0047	<.0001	−6.87%
	Stimulantsa	−0.0772	0.0072	<.0001	−7.43%
	Hallucinogensa	−0.1279	0.0313	<.0001	−12.00%
	Inhalantsa	0.1510	0.0345	<.0001	16.30%
	Multiple Drugsa	−0.1090	0.0045	<.0001	−10.33%
	Cannabis (ref.)	–	–	–
Teaching Hospital	Teachinga	0.1632	0.0045	<.0001	17.73%
	Non-Teaching (ref.)	–	–	–
Hospital Ownership	For-Profita	0.0149	0.0029	<.0001	14.96%
	Governmenta	−0.0957	0.0042	<.0001	−9.13%
	Not-For-Profit (ref.)	–	–	–

^astatistically significant at the α = 0.05 level