Estimating the Frequency of Exposure

question 13

Multiple Choice

Estimating the frequency of exposure:

• A) uses primarily incidence data.
• B) uses primarily prevalence data.
• C) could use both incidence and prevalence data equally.
• D) uses neither incidence data nor prevalence data.

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Definitions:

Butterfly Needle

A small, winged needle used for venipuncture or IV injections, designed to minimize patient discomfort.

Serum

Blood plasma in which clotting factors (such as fibrin) have been removed naturally by allowing the blood to clot prior to isolating the liquid component.

Centrifugation

A laboratory technique that uses centrifugal force to separate particles from a solution according to their size, shape, density, viscosity of the medium, and rotor speed.

Antecubital

Pertaining to the front and inner area of the elbow where veins are commonly accessed for blood draw.