The PMHNP submitted an original research paper to a journal for publication, but it was rejected due to lack of internal validity. Which of the following most accurately defines internal validity?
The likelihood of an event occurring.
How the values are dispersed around the mean.
When the independent variable caused a change in the dependent variable.
When the sample is representative of the population and the results can be generalized.
The Correct Answer is C
Choice A reason: This describes probability, not internal validity. It is relevant to statistical inference but does not address the causal relationship within a study.
Choice B reason: This refers to statistical dispersion or variability, such as standard deviation. It is a descriptive statistic and unrelated to internal validity.
Choice C reason: Internal validity refers to the degree to which a study establishes a causal relationship between the independent and dependent variables. It ensures that observed effects are due to the intervention and not confounding factors, making this the correct definition.
Choice D reason: This describes external validity, which concerns the generalizability of findings to other populations or settings. It is distinct from internal validity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: The MAST is a comprehensive tool used primarily for identifying long-term alcohol abuse. It is less sensitive to recent or episodic binge drinking patterns, especially in younger populations.
Choice B reason: The CAGE questionnaire is brief and useful for identifying alcohol dependence, but it lacks sensitivity for detecting binge drinking and is less effective in younger individuals.
Choice C reason: CIWA is used to assess the severity of alcohol withdrawal symptoms. It is not appropriate for screening binge drinking or assessing alcohol use patterns in outpatient settings.
Choice D reason: The AUDIT is a validated tool designed to detect hazardous and harmful drinking, including binge drinking. It is especially effective in younger populations and provides a broader assessment of alcohol use behaviors.
Correct Answer is D
Explanation
Choice A reason: Understanding health delivery systems is a core competency for nurse practitioners. It includes knowledge of healthcare structures, reimbursement models, and interprofessional collaboration, all essential for effective practice.
Choice B reason: Quality improvement is a foundational competency. Nurse practitioners are expected to engage in activities that enhance patient care, safety, and outcomes through evidence-based practice and continuous evaluation.
Choice C reason: Technology and information literacy are critical in modern healthcare. Competency in electronic health records, data analysis, and digital communication is essential for documentation, decision-making, and patient engagement.
Choice D reason: Memorizing ICD codes is not a required core competency. While familiarity with coding and billing processes is helpful, nurse practitioners are not expected to memorize diagnostic codes. They can reference coding systems as needed.
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