Table 3.

Multivariate regression model comparing women to men on calls to 9-1-1 during an Acute Coronary Syndrome

		Unstable Angina Pectoris		Myocardial Infarction
Model	Covariate adjustment	Prevalence Ratio (95% CI)	p value	Prevalence Ratio (95% CI)	p value
1:	Unadjusted	1.18 (0.65–2.15)	0.585	2.01 (1.40–2.87)	<0.001
2:	Model 1 + sociodemographic factors*	0.96 (0.53–1.71)	0.879	1.93(1.33–2.81)	0.001
3:	Model 2 + history of MI	0.89 (0.50–1.59)	0.696	1.93 (1.33–2.80)	0.001
4:	Model 3 + symptoms†	0.92 (0.51–1.65)	0.770	1.80 (1.22–2.65)	0.003
5:	Model 4 + LVEF/GRACE	0.97 (0.51–1.84)	0.919	1.78 (1.21–2.63)	0.004

LVEF, left ventricular ejection fraction. GRACE, Global Registry of Acute Coronary Events

^*Age (continuous), race/ethnicity, Medicaid/Medicare, insurance over the prior 2 years, education and marital status.

^† Symptoms include nausea/vomiting, syncope, and symptom presentation (constant vs. inconstant).