chap 5

Question 1

Which of the following is the BEST definition of incidence rate?
Number of new cases of a disease reported during a specific period divided by the number of individuals in the population
Proportion of the population affected by a disease at a specific point in time
Effect of a specific risk factor
Variation caused by the multiple effects of genes

Answer 1

Number of new cases of a disease reported during a specific period divided by the number of individuals in the population

Question 2

Which of the following statements is TRUE?
Empiric risks are based on assumptions.
Recurrence risk becomes higher if more than one family member is affected.
An individual below the threshold of liability for a disease will have the disease.
The recurrence risk for disease usually increases rapidly in more remotely related relatives.

Answer 2

Recurrence risk becomes higher if more than one family member is affected

Question 3

Which of the following describes a monozygotic twin?
Twins who do not share traits
Twins who share all traits
Twins who form from double ovulation
Concordant twins have a rate that varies across populations.

Answer 3

Twins who share all traits

Question 4

Which of the following is NOT a congenital disease?
Cleft lip
Clubfoot
Hydrocephaly
Obesity

Answer 4

Obesity

Question 5

Which of the following statements regarding coronary heart disease is TRUE?
It is the leading killer of Americans.
Atherosclerosis causes widening of the blood vessels.
It is more common in females.
Relative risk does not increase with relatives affected.

Answer 5

It is the leading killer of Americans

Question 6

A person presents with a diagnosis of hypertension. Which of the following statements regarding hypertension is TRUE?
Systemic hypertension is seen in less than 5% of populations.
Environmental factors do not cause hypertension.
One of the most important factors affecting blood pressure is sodium intake.
There is 100% correlation between family members and blood pressure.

Answer 6

One of the most important factors affecting blood pressure is sodium intake

Question 7

Which of the following is linked with breast cancer?
BRCA1
APC
HLA II
IDDM

Answer 7

BRCA1

Question 8

Which of the following is a TRUE statement regarding type 2 diabetes?
Type 2 accounts for less than 10% of all cases of diabetes.
There is no insulin production.
These individuals experience insulin resistance.
Type 2 diabetes is less common among obese persons.

Answer 8

These individuals experience insulin resistance