. 2022 Nov 19;20:101289. doi: 10.1016/j.ssmph.2022.101289

Table 2.

Association between racial segregation indices and substance use treatment facilities per 100,000 population.

	All facilities		MAT facilities
	(1)	(2)	(3)	(4)
$D_{c t}^{B}$	−0.407	−0.424	−0.255	−0.271
	(0.372)	(0.372)	(0.218)	(0.219)

$D_{c t}^{H}$	−0.200	−0.266	−0.532*	−0.572*
	(0.415)	(0.412)	(0.302)	(0.302)

$I n t e r a c t_{c t}^{W B}$	−6.748**	−6.859**	−3.166	−4.682**
	(2.955)	(3.044)	(2.308)	(2.308)

$I n t e r a c t_{c t}^{B W}$	0.337	0.369	0.198	0.175
	(0.494)	(0.494)	(0.270)	(0.268)

$I n t e r a c t_{c t}^{W H}$	−2.749	−3.343	−2.264	−3.516
	(3.353)	(3.213)	(2.360)	(2.285)

$I n t e r a c t_{c t}^{H W}$	−0.214	−0.217	−0.277	−0.135
	(0.787)	(0.777)	(0.658)	(0.639)

N	9258	9258	9258	9258
$R^{2}$	0.841	0.842	0.747	0.750

County fixed effects	Yes	Yes	Yes	Yes
State-year fixed effects	Yes	Yes	Yes	Yes
County controls	No	Yes	No	Yes

Notes: Standard errors clustered at county level. Outcome data are the number of substance use treatment facilities per 100,000 population calculated from the 2010, 2015, and 2020 National Survey of Substance Abuse Treatment Services directories. Racial segregation indices and population shares calculated from the 5-year 2009, 2014, and 2019 American Community Surveys. Regression controls include the natural log of county income per capita, county race-specific opioid mortality rates, county median age, county fixed effects and state-year fixed effects. ***p < 0.01, **p < 0.05, *p < 0.1.