Table 2.

Regional Differences in Survival by Arrest Rhythm

	Northeast	Midwest	South	West
Survival Outcome	(n=25,873)	(n=38,295)	(n=57,304)	(n=32,702)
Overall
Survival to discharge	11,317 (44%)	17,655 (46%)	25,417 (44%)	14,408 (44%)
Unadjusted OR	reference	1.10 (0.99–1.22)	1.03 (0.93–1.13)	1.01 (0.91–1.13)
Adjusted OR*†	reference	1.12 (1.01–1.25)	1.10 (0.99–1.21)	0.90 (0.81–1.01)
Non-Ventricular Fibrillation
Survival to discharge	1,928/12,478 (15.5%)	3,273/18,882 (17%)	4,579/29,243 (16%)	2,229/15,032 (15%)
Unadjusted OR	reference	1.15 (0.98–1.35)	1.02 (0.87–1.19)	0.95 (0.80–1.14)
Adjusted OR*	reference	1.04 (0.88–1.23)	0.90 (0.77–1.06)	0.86 (0.72–1.03)
Ventricular fibrillation
Survival to discharge	9,389/13,395 (70%)	14,382/ 19,413 (74%)	20,838/28,061 (74%)	12,179/17,670 (69%)
Unadjusted OR	reference	1.22 (1.07–1.38)	1.23 (1.09–1.39)	0.95 (0.83–1.07)
Adjusted OR*	reference	1.16 (1.02–1.32)	1.24 (1.09–1.40)	0.93 (0.82–1.06)

^*Adjusted for age, sex, race, income, primary payer, Charlson Comorbidity Index, hospital size and hospital location/teaching status, coronary artery disease, weekend admission, smoking, dyslipidemia, atrial fibrillation, dementia, carotid disease, previous percutaneous coronary intervention, previous coronary artery bypass grafting, previous cardiac arrest, family history of sudden arrest, family history of coronary artery disease, and percutaneous coronary intervention (on this admission).

^†Adjusted for initial rhythm