An Interrupted Time-Series Design Controls for ____ but Not for ____

question 1

Multiple Choice

An interrupted time-series design controls for ____ but not for ____.

• A) history; the Hawthorne effect
• B) history; normal fluctuation
• C) normal fluctuation; how one variable influenced others
• D) maturation; normal fluctuation

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Definitions:

Interferon

A protein that blocks viruses from infecting cells.

Chemical Barrier

A defense mechanism in the body that uses chemicals (such as acids or enzymes) to protect against pathogens and foreign substances.

Nonspecific Defense

General immune responses that a body provides against pathogens regardless of their specificity.

Phagocytosis

The process by which cells engulf and digest solid substances, such as bacteria or other foreign particles.