In a study following interpretation are obtained: Satisfied,Very satisfied,Dissatisfied. Which type of scale is this?
**Core Concept**
A scale is a measurement tool used to quantify or rank the level of something. In the context of this question, we're dealing with a type of scale used to measure patient satisfaction or opinions. The correct answer is a type of scale that is widely used in medical research to assess patient satisfaction.
**Why the Correct Answer is Right**
The correct answer is a **Likert Scale**. A Likert scale is a type of rating scale that measures attitudes, opinions, or feelings by asking respondents to indicate the degree to which they agree or disagree with a statement. In this case, the scale has three points: Satisfied, Very satisfied, and Dissatisfied. This type of scale is commonly used in patient satisfaction surveys, quality of life assessments, and other areas of medical research.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because a **Nominal Scale** is used to categorize data without any quantitative value, whereas a Likert scale is a type of ordinal scale that measures the intensity of a particular trait or characteristic.
**Option B:** This option is incorrect because an **Interval Scale** is a type of scale that has equal intervals between consecutive levels, but it does not have a true zero point. A Likert scale, on the other hand, has a true zero point (i.e., the middle option is typically the neutral point).
**Option C:** This option is incorrect because an **Ordinal Scale** is a type of scale that ranks data in order, but does not measure the magnitude of differences between consecutive levels. While a Likert scale is an ordinal scale, it is more specific in its application and measurement of attitudes or opinions.
**Clinical Pearl / High-Yield Fact**
When using a Likert scale, it's essential to note that the middle option (in this case, Satisfied) is often used as the neutral point, and the scale is typically symmetrical around this point. This means that the number of options on one side of the scale (e.g., Very satisfied) should be equal to the number of options on the other side (e.g., Dissatisfied).
**Correct Answer:** C. Likert Scale