Rehospitalization following percutaneous coronary intervention for commercially insured patients with acute coronary syndrome: a retrospective analysis

Table 1 Characteristics of Study Population (N = 6687)

	n	(%)
Age
<65	5587	(83.6)
65–74	803	(12.0)
>74	297	(4.4)
Mean ± SD	56.5 ± 9.4
Gender
Male	5174	(77.4)
Female	1513	(22.6)
Regions
Midwest	2265	(33.9)
Northeast	597	(8.9)
South	2939	(44.0)
West	886	(13.2)
Index ACS Diagnoses*
STEMI	3276	(49.0)
NSTEMI and UA	3411	(51.0)
Type of Stent at Index^†
Drug-eluting stent	5534	(82.8)
Bare-metal stent	787	(11.8)
No stent	62	(0.9)
Unknown	304	(4.5)
Medical History in 12-month Baseline*^†
Prior PCI	487	(7.3)
Prior CABG	51	(0.8)
Clopidogrel Use	998	(14.9)
Hypertension	4821	(72.1)
Hyperlipidemia	5176	(77.4)
Diabetes	1777	(26.6)

Note: Percentages may not add to 100 due to rounding.
Abbreviations: ACS = acute coronary syndrome; CABG = coronary artery bypass graft; NSTEMI = non-ST-segment elevation myocardial infarction; PCI = percutaneous coronary intervention; SD = standard deviation; STEMI = ST-segment elevation myocardial infarction; UA = unstable angina.
*ICD-9-CM Codes: Diabetes = 250.xx; Hyperlipidemia = 272.xx; Hypertension = 401.xx-4-5.xx; STEMI = 410.xx; NSTEMI = 410.7; UA = 411.1.
^†Type of Stent determined by Diagnosis Related Group code: Drug-eluting stent = 557, 558; Bare-metal stent = 555,556; No stent = 518.

ISSN: 1756-0500