Which of the Following Statements Most Accurately Describes a Cohort

question 4

Multiple Choice

Which of the following statements most accurately describes a cohort study?

• A) Persons are randomly assigned to groups and then followed to determine if they develop certain outcomes.
• B) Groups of persons with different levels of risk are identified and then followed to determine if they develop certain outcomes.
• C) Persons with rarely occurring conditions are matched with persons who don't have the conditions and their prior exposure to risk is examined.
• D) Persons are randomly assigned to groups and then data is collected ex post facto to study certain variables.

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Definitions:

Lactation

The process of producing and secreting milk from the mammary glands of mammals following childbirth, providing essential nutrients to the newborn.

Estrogen

A group of steroid hormones responsible for the development and regulation of the female reproductive system and secondary sex characteristics.

Progesterone

Steroid hormone secreted by the corpus luteum and one of the hormones secreted by the placenta.

Ductus Arteriosus

A fetal blood vessel that allows blood to bypass the lungs, which closes soon after birth to establish the regular circulatory path.