mode of survey administration:

How do telephone interviews compare to face-to-face interviews?

Telephone interviews offer a middle ground between face-to-face interviews and self-administered questionnaires:
Advantages:
Lower cost compared to face-to-face.
Faster data collection.
Reduced interviewer bias.
Disadvantages:
Limited to populations with telephone access.
Shorter interviews.
Potential for lower response rates.

Frequently asked queries:

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What factors should be considered when choosing a mode of survey administration?
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