In epidemiologic and clinical research, name the scale to measure the intensity or frequency of various sympt… - UPUMS Nsg officer-2023

UPUMS Nsg officer-2023

Nursing Research & Statistics

Easy

Appeared in: UPUMS Nsg officer-2023

Explanation

The Visual Analogue Scale (VAS) is a psychomotor response scale used to measure subjective characteristics that cannot be directly measured, such as the intensity of pain or anxiety.
It consists of a 10 cm (100 mm) line with anchors at each end representing the extremes of the sensation (e.g., 'no pain' to 'worst pain').
This format allows for a continuous measurement of intensity, providing a quantitative score that is sensitive to changes, making it ideal for clinical research and tracking patient progress.

Option B: A checklist is used to record the presence or absence of items, behaviors, or criteria. It does not measure the intensity or frequency on a continuous scale.
Option C: A nominal scale is used for categorization or labeling of data into distinct groups that have no inherent order or ranking.
Option D: An ordinal scale ranks data in a specific order, but the intervals between the ranks are not defined or necessarily equal. It provides a rank, not a precise measure of intensity.

Clinical Relevance

Nursing practice connection: Use the key finding related to Measurement scales in clinical research to guide bedside assessment, documentation, and the next nursing action.
Nurses frequently use pain scales like the VAS, Numeric Rating Scale (NRS), or Verbal Rating Scale (VRS) to assess a patient's pain level, which is considered the 'fifth vital sign'.
Accurate pain assessment using these scales is crucial for determining the need for analgesia, evaluating the effectiveness of pain management interventions, and communicating the patient's status to the healthcare team.
What if the patient is non-verbal or has cognitive impairment? In such cases, a VAS is inappropriate. The nurse would need to use an observational pain scale, such as the FLACC (Face, Legs, Activity, Cry, Consolability) scale for infants or the PAINAD (Pain Assessment in Advanced Dementia) scale for adults with dementia.

How to Approach the Question

First, identify the key requirement of the question stem: the need for a scale to measure the 'intensity' or 'frequency' of symptoms.
Next, recall or deduce the primary function of each measurement scale listed in the options.
Evaluate 'Nominal scale': This is for categories without order (e.g., gender), so it's incorrect.
Evaluate 'Checklist': This is for presence/absence, not intensity, so it's incorrect.
Evaluate 'Ordinal scale': This provides an order (mild, moderate, severe) but not a continuous measure of intensity. It's a possibility but less precise.
Evaluate 'Visual analogue scale': This is specifically designed to measure subjective intensity on a continuous line. This directly matches the question's requirement, making it the best answer.

Concept Tested & Keywords

Concept Tested: Measurement scales in clinical research
Stem keywords: epidemiologic and clinical research, scale, measure intensity, frequency, symptoms
Lead-in keywords: name the scale

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E6 NursingResearch Suresh Sharma 5e Part 2 p. 14-16

E6 Nursing Vital Signs p. 134-136