JODHPUR AIIMS SNO-2018
Nursing Research & Statistics
Easy
The reliability of a measuring tool has all of the following aspects except?
Appeared in: JODHPUR AIIMS SNO-2018
Explanation
- Efficiency because it is not a psychometric property related to the consistency of a measurement tool.
- Efficiency describes the practical feasibility of a tool, considering factors like cost, time required for administration, and ease of scoring.
- While important for practical application, efficiency does not measure whether the tool yields consistent, dependable, and repeatable results, which is the core meaning of reliability.
- Reliability is strictly concerned with consistency, which includes stability over time, internal consistency of items, and equivalence between raters or forms.
Why Other Options Were Wrong
- Option A: Stability is a fundamental aspect of reliability.
- Option C: Equivalence is a core aspect of reliability.
- Option D: Internal consistency is a major aspect of reliability.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Aspects of Reliability in Research Measurement as background academic context rather than a clinical decision trigger.
- Nurses rely on various assessment tools (e.g., Braden Scale for pressure ulcer risk, Glasgow Coma Scale for consciousness, pain rating scales). Understanding reliability is crucial to ensure these tools provide consistent and trustworthy data for making clinical decisions.
- Using an unreliable tool can lead to inconsistent patient assessments, which may result in missed problems, delayed interventions, or inappropriate treatment, ultimately compromising patient safety.
- What if a hospital uses a new, quicker fall-risk scale (high efficiency) but nurses notice it gives very different scores for the same patient on consecutive days (low stability)? This highlights that efficiency cannot replace reliability; a tool must be both practical and consistent to be clinically useful.
How to Approach the Question
- First, identify the keyword 'except' in the question. This tells you that three of the options are true aspects of reliability, and your task is to find the one that is not.
- Next, define the core concept in the question stem: 'reliability of a measuring tool'. In research and statistics, reliability means consistency or repeatability.
- Evaluate each option against the definition of reliability (consistency):
- Does 'Stability' relate to consistency? Yes, consistency over time.
- Does 'Equivalence' relate to consistency? Yes, consistency between different raters or test forms.
- Does 'Internal consistency' relate to consistency? Yes, consistency among the items within the tool itself.
Concept Tested & Keywords
- Concept Tested: Aspects of Reliability in Research Measurement
- Stem keywords: reliability, measuring tool
- Lead-in keywords: except
- Negative lead-in flag: The question asks to identify the option that is NOT an aspect of reliability.
Question ID
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Reference Book
E6 NursingResearch Suresh Sharma 5e Part 2 p. 36-38
E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) pp. 3392-3394, 3569-3571
Practise the full JODHPUR AIIMS SNO-2018
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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