What is the independent variable in this research question?
Clients aged 20 to 30 years.
Antipsychotic-induced weight gain.
Educational intervention.
Diagnosis of schizophrenia.
The Correct Answer is B
Choice A rationale:
Clients aged 20 to 30 years is not the independent variable in this research question. It is likely part of the study's population or sample characteristics but not the variable being manipulated or studied.
Choice B rationale:
This is the correct answer. Antipsychotic-induced weight gain is the independent variable in this research question because it represents the factor or condition that the researcher is manipulating or studying to determine its effect on the outcome variable (pain relief when used in conjunction with oral analgesics).
Choice C rationale:
Educational intervention is not the independent variable in this research question. It is the intervention or treatment being applied to the participants and is more likely the dependent variable, as its effectiveness is being assessed.
Choice D rationale:
Diagnosis of schizophrenia is not the independent variable in this research question. It is a participant characteristic that may influence the study's results but is not the variable being manipulated or studied in this context.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
A meta-analysis that concluded that bone density improved among individuals who took Vitamin D. Rationale: A meta-analysis provides the highest level of evidence among the options listed. It synthesizes data from multiple studies, often randomized controlled trials (RCTs), to draw conclusions about the effectiveness of an intervention. In this case, the meta-analysis concluded that bone density improved among individuals who took Vitamin D, suggesting strong evidence to support its use.
Choice B rationale:
A cross-sectional study that found a strong relationship between Vitamin D intake and bone density. Rationale: Cross-sectional studies can identify associations between variables but cannot establish causality. While this study found a strong relationship, it does not provide as strong evidence as a meta-analysis of RCTs.
Choice C rationale:
A cohort study that concluded low levels of Vitamin D were linked to decreased bone mineral density. Rationale: Cohort studies can provide valuable evidence, but they may have limitations, such as confounding variables. While this study suggested a link, it may not be as robust as a meta-analysis of RCTs.
Choice D rationale:
A time series design study that reported that those who took Vitamin D had improved bone density. Rationale: Time series designs can be useful for assessing changes over time, but they may have limitations in terms of establishing causality. Additionally, the strength of evidence from a single time series study may not be as high as that from a meta-analysis of multiple RCTs.
Correct Answer is C
Explanation
Choice A rationale:
P < .05 does not indicate a specific probability of the result occurring again by chance alone (e.g., 1-in-5 chance). Instead, it signifies that the result is statistically significant at the 0.05 level.
Choice B rationale:
While nursing research often requires rigorous standards, P < .05 represents a common threshold for statistical significance in many research studies. It does not indicate that the result is not significant for nursing research.
Choice C rationale:
This is the correct answer. P < .05 means that the researcher is 95% confident that the result did not occur randomly. In other words, there is a 95% probability that the observed result is not due to chance but is related to the variables being studied.
Choice D rationale:
P < .05 does not imply that only 5 out of 100 nursing research studies would report this result as significant. It signifies a specific level of confidence in the result's significance, not its frequency in research studies.
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