4.

Univariate and Sequential Multivariate Logistic Regression Analysis for Likelihood of a Symptom Predicting a Recommendation Favoring Revascularization for Only Those Patients With Significant Stenosis Identified by Cardiac Catheterization: Pittsburgh, Pa, November 1997 to June 1999

Predictor	Univariate Analysis, OR (95% CI)	P	Multivariate Analysis,a OR (95% CI)	P
Black race	0.756 (0.430, 1.330)	.332	0.864 (0.474, 1.537)	.632
Female gender	2.037 (1.332, 3.117)	.001	2.064 (1.328, 3.208)	.001
Age	1.012 (0.998, 1.027)	.096	1.005 (0.990, 1.021)	.522
Moderate diseaseb	1.749 (1.074, 2.848)	.025	1.653 (0.998, 2.738)	.051
Severe diseaseb	1.642 (1.193, 2.259)	.002	1.75 (1.246, 2.458)	.001
Shortness of breath	0.598 (0.428, 0.835)	.003	0.535 (0.375, 0.762)	<.001
Chest pain	1.013 (0.730, 1.404)	.904	1.33 (0.799, 1.608)	.484
Anginal equivalent	1.385 (0.991, 1.936)	.056	1.344 (0.946, 1.909)	.099
Other symptoms	0.563 (0.330, 0.959)	.034	0.532 (0.306, 0.924)	.025
Fatigue	1.402 (0.717, 2.743)	.324	1.576 (0.786, 3.158)	.200

Note. OR = odds ratio; CI = confidence interval. Total sample, n = 737; Blacks, n = 52, 7.1%; Whites, n = 685, 92.9%.

^aThe results of sequential logistic regression with race, gender, age, and coronary disease severity entered in first block as covariates and the symptoms entered in the second block as predicators of interest. No significant interaction with race was found in the third block; thus results from the second block only are reported.

^bMild disease is the reference.