Week+1

Science Question

1. In 1949, a study of heart disease included 5,137 adults: 2,292 men and 2,845 women. All the individuals were 49 to 70 years of age, and none showed any signs of coronary artery disease. After 14-16 years of careful follow-up, it was found that:

I.151 men and 37 women showed evidence of coronary artery disease that would account for a heart attack. II.102 men and 18 women died of coronary artery disease before they reached the age of 65. III.58 percent of the men and 39 percent of the women died within one hour of having a heart attack. IV.For both men and women, sudden death was more likely if they were under age 55 at the time of the attack. V.Not all heart attacks produce symptoms. A considerable number of men and women had a myocardial infarction (heart muscle damage) without knowing it. Of those who suffered such "silent coronaries"; 22 percent of the men and 35 percent of the women did not know muscle damage had occurred.

In the design of this study, the researchers made sure that A. some individuals had coronary artery disease B. some individuals were in their thirties C. the number of men and women was equal D. all participants were adults

2. As explained in the study, a person who has a "silent coronary" A. is unaware of any heart attack symptoms B. does not scream in pain while having a heart attack C. shows no evidence of heart muscle damage D. always dies of a myocardial infarction

3. A woman who is 53 years old has a heart attack. Compared with a man, she is more likely to A. die of coronary artery disease before age 65 B. have a "silent coronary" C. die within an hour of the attack D. die as the result of a heart attack after age 65

4. Which conclusion is consistent with the results of the study? A. Chances of death within one hour of a heart attack are greater for women than men. B. Chances of death from coronary artery disease are less for men than women. C. Evidence of coronary artery disease is equal among men and women. D. Sudden death is more likely for both men and women if they are under age 55 at the time of the attack.

5. Based on the results of this experiment, of the people who died of coronary artery disease before age 65 A. 18 percent were women B. 20 percent were women C. 85 percent were men D. 102 percent were men

6. A group of 1000 men and 1200 women between the ages of 50 and 65 are to be studied for coronary artery disease. Based on the original study, which of the following results could be predicted most reliably? A. Eight (8) women will die of coronary heart disease after they reach age 65. B. Sixteen (16) women will show significant evidence of coronary artery disease. C. Forty-four (44) men will die of coronary artery disease after they reach age 65. D. Sixty-five (65) men will show no significant evidence of coronary artery disease.

ANSWER KEY

1. D 2. A 3. B 4. D 5. C 6. B