Question

The Black Women's Health Study, a study of risk factors for coronary heart disease in African American women, consisted of 352 women who reported having had a heart attack (cases), who were matched on age with 1760 controls (Am J Epi 1999; 150:904-909). The following data summarize some of the findings.

History of Heart Attack in a Parent	Case	Control	Total
No	169	1082	1251
Yes: at age 50+	91	329	420
Yes: before age 50	53	106	159
Total	313	1517	1830

In the BWHS, a p-value for the test of the null hypothesis that the Odds Ratio of having a parental history of heart attack for cases compared to controls equals 1 is approximately:

		a. p<0.01
		b. 0.01<p<0.05
		c. 0.05<p<0.10
		d. 0.10<p<0.5
		e. p>0.5

Answer 1