RUHS, Jaipur, M.Sc Nursing Entrance Exam-2019
Nursing Research & Statistics
Easy
The degree of consistency with which an instrument measures the attribute it is designed to measure?
Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2019
Explanation
- The question asks for the term that describes the 'consistency' of a measurement instrument.
- Reliability is defined as the degree to which an instrument consistently measures an attribute it is designed to measure.
- This means if the measurement is repeated under the same conditions, a reliable tool will yield similar results.
- The keyword 'consistency' in the question stem directly corresponds to the definition of reliability.
Why Other Options Were Wrong
- Option B: Validity refers to the accuracy of an instrument—whether it measures what it is intended to measure. It does not refer to the consistency of the measurement.
- Option C: Probability is a mathematical concept that deals with the likelihood of an event occurring. It is not a characteristic of a measurement instrument's quality.
- Option D: This option is incorrect because both Validity and Probability are incorrect answers to the question asked.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Principles of Measurement in Research as background academic context rather than a clinical decision trigger.
- Nurses frequently use assessment tools like the Braden Scale (for pressure ulcer risk) or the Morse Fall Scale. These tools must be reliable to ensure every nurse on every shift assesses the patient consistently, leading to standardized care.
- Understanding reliability is crucial when using medical devices. An uncalibrated blood pressure cuff may give inconsistent (unreliable) readings, leading to incorrect clinical decisions about antihypertensive medications.
- What if? If a nurse uses a pain rating scale (e.g., 0-10) but interprets the patient's responses differently each time (low inter-rater reliability), the patient's pain could be undertreated or they could receive excessive analgesia, posing a safety risk.
How to Approach the Question
- First, analyze the question to identify the key concept. The most important word in the stem is 'consistency'.
- Think about the definitions of the terms provided in the options in the context of measurement.
- Reliability is about consistency and repeatability.
- Validity is about accuracy and measuring the correct thing.
- Match the keyword 'consistency' from the question to its corresponding definition among the options.
- Recognize that 'Reliability' is the term that directly means consistency in measurement, making it the correct answer.
Concept Tested & Keywords
- Concept Tested: Principles of Measurement in Research
- Stem keywords: degree of consistency, instrument measures
- Lead-in keywords: is
Question ID
Q1q3bOHkHeCJ-xCv7x9S9t
Reference Book
E6 NursingResearch Sukhpal Kaur pp. 318-320, 321-323
E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 3392-3394
Practise the full RUHS, Jaipur, M.Sc Nursing Entrance Exam-2019
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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