Contents
- 1 How do you interpret the intraclass correlation coefficient?
- 2 How do you interpret ICC in SPSS?
- 3 What does a negative intraclass correlation coefficient mean?
- 4 What are the two types of reliability coefficients?
- 5 How is the intraclass correlation coefficient ( ICC ) used?
- 6 When to use ICC for test / retest reliability?
- 7 What should the value of an ICC be?
How do you interpret the intraclass correlation coefficient?
A flowchart showing readers how to interpret ICC in published studies. Values less than 0.5 are indicative of poor reliability, values between 0.5 and 0.75 indicate moderate reliability, values between 0.75 and 0.9 indicate good reliability, and values greater than 0.90 indicate excellent reliability.
How do you interpret ICC in SPSS?
If a single individual, you want ICC(#,1), which is “Single Measure” in SPSS….Run the analysis in SPSS.
- Analyze>Scale>Reliability Analysis.
- Select Statistics.
- Check “Intraclass correlation coefficient”.
- Make choices as you decided above.
- Click Continue.
- Click OK.
- Interpret output.
What does low ICC mean?
A high Intraclass Correlation Coefficient (ICC) close to 1 indicates high similarity between values from the same group. A low ICC close to zero means that values from the same group are not similar.
What does a negative intraclass correlation coefficient mean?
The intraclass correlation measures a special meaning of the word independence. The intraclass correlation will be greater than 0. However, if the variability within the group is greater than across groups, then this is evidence of “divergence” within a group and the intraclass correlation will be negative.
What are the two types of reliability coefficients?
There are two types of reliability – internal and external reliability. Internal reliability assesses the consistency of results across items within a test. External reliability refers to the extent to which a measure varies from one use to another.
Can you have a negative intraclass correlation?
The intraclass correlation will be negative whenever MSB < MSW. In other words, the intraclass correlation will be negative whenever the variability within groups exceeds the variability across groups. This means that scores in a group “diverge” relative to the noise present in the individuals.
How is the intraclass correlation coefficient ( ICC ) used?
Abstract Objective: Intraclass correlation coefficient (ICC) is a widely used reliability index in test-retest, intrarater, and interrater reliability analyses. This article introduces the basic concept of ICC in the content of reliability analysis.
When to use ICC for test / retest reliability?
We can use the intraclass correlation coefficient (ICC) for test/retest reliability (see Split-Half Reliability ). This is especially useful in the pilot phase of questionnaire design in measuring consistency.
What is the reliability of an intraclass?
As indicated in the calculation, reliability value ranges between 0 and 1, with values closer to 1 representing stronger reliability.
What should the value of an ICC be?
The value of an ICC can range from 0 to 1, with 0 indicating no reliability among raters and 1 indicating perfect reliability among raters. In simple terms, an ICC is used to determine if items (or subjects) can be rated reliably by different raters.