Table 3.

Baseline characteristics of SCAD patients between OMT versus PCI using propensity-score matched data.

Variables		OMT		PCI		Total	p-value
Number of patients, n		7170		7170		14,340
Age		58.58 $\pm$ 14.67		57.74 $\pm$ 13.45			0.11
Female		5090	70.99	4585	63.95	9675	0.00
Race							0.82
	White	5155	71.90	5245	73.15	10,400
	Black	1005	14.02	905	12.62	1910
	Hispanic	645	9.00	620	8.65	1265
	Asian or Pacific Islander	160	2.23	160	2.23	320
	Native American	25	0.35	20	0.28	45
	Other	180	2.51	220	3.07	400
Hospital bed size							0.39
	Small	945	13.18	1045	14.57	1990
	Medium	1925	26.85	1995	27.82	3920
	Large	4300	59.97	4130	57.60	8430
Hospital teaching status							0.78
	Rural	290	4.04	325	4.53	615
	Urban non-teaching	1155	16.11	1180	16.46	2335
	Urban teaching	5725	79.85	5665	79.01	11,390
Admission
	Elective	685	9.55	890	12.41	1575	0.02
Primary payment coverage							0.24
	Medicare	2240	31.24	2515	35.08	4755
	Medicaid	885	12.34	830	11.58	1715
	Private insurance	3420	47.70	3275	45.68	6695
	Self-pay	380	5.30	315	4.39	695
	No charge	30	0.42	15	0.21	45
	Other	215	3.00	220	3.07	435
Median household income, $							0.84
	1–28,999	1755	24.48	1665	23.22	3420
	29,000–35,999	1650	23.01	1705	23.78	3355
	36,000–46,999	2000	27.89	1980	27.62	3980
	47,000+	1765	24.62	1820	25.38	3585
Hospital region							0.58
	Northeast	1435	20.01	1430	19.94	2865
	Midwest	1825	25.45	1690	23.57	3515
	South	2365	32.98	2520	35.15	4885
	West	1545	21.55	1530	21.34	3075
Comorbidities
	Congestive heart failure	1900	26.50	2095	29.22	3995	0.10
	Cardiac arrhythmias	2140	29.85	2445	34.10	4585	0.01
	Valvular heart diseases	805	11.23	875	12.20	1680	0.43
	Pulmonary circulatory disorders	335	4.67	335	4.67	670	1.00
	Peripheral vascular disease	660	9.21	790	11.02	1450	0.11
	Hypertension	4820	67.22	4915	68.55	9735	0.44
	Paralysis	55	0.77	55	0.77	110	1.00
	Other neurologic disorders	365	5.09	390	5.44	755	0.68
	Chronic lung disease	1245	17.36	1235	17.22	2480	0.92
	Diabetes	1270	17.71	1605	22.38	2875	0.00
	Hypothyroidism	880	12.27	855	11.92	1735	0.78
	CKD	645	9.00	895	12.48	1540	0.00
	Liver disease	265	3.70	275	3.84	540	0.85
	AIDS	15	0.21	15	0.21	30	1.00
	Cancer	125	1.74	145	2.02	270	0.58
	Rheumatologic disorders	230	3.21	195	2.72	425	0.44
	Coagulopathy	290	4.04	335	4.67	625	0.41
	Obesity	1630	22.73	1655	23.08	3285	0.83
	Weight loss	150	2.09	155	2.16	305	0.90
	Fluid and electrolyte disorders	1330	18.55	1355	18.90	2685	0.81
	Anemia	265	3.70	265	3.70	530	1.00
	Alcohol abuse	160	2.23	175	2.44	335	0.71
	Drug abuse	280	3.91	315	4.39	595	0.51
	Psychoses	35	0.49	25	0.35	60	0.56
	Depression	915	12.76	875	12.20	1790	0.65
	FMD	30	0.42	30	0.42	60	1.00
	Smoking	1475	20.57	1510	21.06	2985	0.75
	Prior MI	930	12.97	975	13.60	1905	0.61
	Prior PCI	65	0.91	75	1.05	140	0.69
	Prior CABG	250	3.49	445	6.21	695	0.00
	Prior stroke	350	4.88	395	5.51	745	0.63
	AMI	5350	74.62	5295	73.85	10,645	0.63

AIDS, acquired immunodeficiency syndrome; AMI, acute myocardial infarction; CABG, coronary artery bypass graft surgery; CKD, chronic kidney disease; FMD, fibromuscular dysplasia; MI, myocardial infarction; OMT, optimal medical therapy; PCI, percutaneous coronary intervention; SCAD, spontaneous coronary artery dissection.