Which of the Following Statements Is True About Case-Control Designs

question 10

Multiple Choice

Which of the following statements is true about case-control designs?

• A)They rarely are feasible.
• B)Data must be collected at multiple points in time.
• C)Retrospective data are collected about past differences that might explain differences in outcome.
• D)We usually can be highly confident about their internal and external validity.
• E)We usually can be highly confident about the direction of causal influence.

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Definitions:

Frequent Nightmares

The recurring experience of distressing or terrifying dreams, often leading to sleep disturbances.

Sleep Terrors

Frightening dreamlike experiences that occur during the deepest stage of non-REM sleep, shortly after the child has gone to sleep.

Insomnia

A sleep disorder characterized by difficulty falling asleep, difficulty remaining asleep during the night, and waking early.

Toilet Train

The process of teaching a young child to use the toilet for urination and defecation independently.