A questionnaire about tuberculosis knowledge contains several items that ask about patients' satisfaction with clinic cleanliness instead. Which measurement problem is most evident?
Correct answer: A. Poor content validity
- A. Poor content validity
- B. High test-retest reliability
- C. Sampling frame accuracy
- D. Inter-rater agreement
Explanation
Content validity concerns whether an instrument covers the subject it is intended to measure. Items about clinic cleanliness do not adequately represent tuberculosis knowledge, even if the questionnaire produces consistent scores.
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Nursing research covers problem identification, literature review, research questions, hypotheses, variables, quantitative and qualitative approaches, study designs, sampling and data collection. It also addresses validity, reliability, research ethics, data interpretation and evidence-based practice, including how research findings can guide nursing decisions and care.
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