Select the Best Description of a Cross-Sectional/prevalence Study Design

question 13

Multiple Choice

Select the best description of a cross-sectional/prevalence study design.

• A) Examines relationships between a risk factor and a disease outcome at the population level
• B) Creates a "snapshot" of an existing disease and factors that may be associated
• C) Used to determine potential exposures in relation to a disease outcome; a group with the disease is recruited and compared to an equivalent group without disease
• D) Examines relationships between an exposure and a disease outcome at the population level; subjects are followed over time and information on exposures is collected prior to the development of disease
• E) Applies a controlled intervention to test the effect in prevention or treatment of disease; investigators assign who receives treatment and what treatment is given

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Definitions:

X Chromosome

One of the two chromosomes that determine sex; in females, both members of the 23rd pair of chromosomes are X, and in males, one member of the 23rd pair is X.

Y Chromosome

The sex chromosome found in mammals, including humans, typically present in males, who possess one X and one Y chromosome, influencing the development of male sexual characteristics.

Dizygotic Twins

Also known as fraternal twins, these siblings are born from two different eggs fertilized by two different sperm cells, sharing about 50% of their genes.

Identical

Having the exact same genetic makeup or being exactly alike in every detail.