Table 4.

Results of logistic regression analyses of questions with statistically significant differences in responses by one or more demographic characteristics

Symptom	Demographic variable, if significant	Adjusted Odds Ratio	95% Confidence Interval for Odds Ratio	p	Nagelkerke R2
Epistaxis	Age*	0.97	0.96 – 0.99	<0.01	0.08
	African-American race†	0.55	0.34 – 0.90	0.02
Easy bruising	Female sex‡	4.78	2.50 – 9.16	<0.01	0.13
	Infrequent aspirin use§	4.18	1.39–12.58	0.01
Venipuncture bruising	Female Sex‡	3.04	1.22–7.59	0.02	0.07
Heavy Menses	Infrequent aspirin use§	3.03	1.25–7.32	0.01	0.08
Dark stools	Age*	1.02	1.00–1.04	0.02	0.06
Ophthalmic bleeding	African-American race†	0.29	0.11–0.75	0.01	0.08

^*Odds ratio per additional year of age

^†Odds ratio versus Caucasian race

^‡Odds ratio versus male sex

^§Defined as aspirin use less than once per week; odds ratio versus aspirin use more than once per week