Comments on: Intraclass Correlation Coefficient in R https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/ Data Mining and Statistics for Decision Support Tue, 02 Apr 2024 10:05:36 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Guðni https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-29122 Tue, 02 Apr 2024 10:05:36 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-29122 In reply to Claudia.

The two-way mixed and two-way random methods will yield identical ICC values, so this choice will likely be inconsequential. The only difference is in interpretation: The two-way mixed model treats rater as a fixed effect, the two-way random model treats it as a random effect. The estimated ICCs will however be the same, see e.g., Table 4 in McGraw & Wong (1996).

]]> By: Ginny https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-29090 Fri, 08 Mar 2024 03:07:32 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-29090 I would love to know the answer to this if you’ve figured it out!

]]> By: Ginny https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-29089 Fri, 08 Mar 2024 03:07:08 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-29089 In reply to Claudia.

I would love to know the answer to this if you’ve figured it out!

]]> By: Claudia https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-28975 Fri, 17 Nov 2023 17:53:50 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-28975 There seem to be only two options for the argument “model” (one-way and two-way). What should I do in case of a two-way mixed effects model?

]]> By: Moritz Truninger https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-28938 Wed, 04 Oct 2023 13:46:56 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-28938 Many thanks for the excellent explanation!
One question regarding the icc-function of the irr-Package. While you can specify that your score is an average score, you cannot specify how many measurements flow into the average score. Would that not be needed for an appropriate adjustement of the ICC?

]]> By: Artyom https://www.datanovia.com/en/lessons/intraclass-correlation-coefficient-in-r/#comment-20712 Mon, 06 Jul 2020 12:49:09 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=10308#comment-20712 Thanks a lot for the great post! I would like to ask whether one could use the ICC with questionnaire scales instead of doctors, as in the example above? For instance, if 20 participants filled out a questionnaire with 3 factors that all 3 measure the same construct (e.g., the three factors could be number of shot drank per week, distance between each time a person drinks and # of friends who drink alcohol to measure alcoholism). So, could one use these three factors instead of “doctors” above (i.e., columns in the ICC)? Thank you!

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