| Calculating ICC [message #22544] |
Tue, 30 March 2021 09:36  |
Ghose
Messages: 17
Registered: May 2018
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Member |
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Hi,
I am working with Benin IR data to explore the factors associated with educational achievement (v106). My supervisor suggested that I check ICC value first since the data are clustered, and then choose between -logit- and -melogit- depending on whether the ICC is above the threshold of 0.15. Now it seems ICC can be calculated both before:
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. loneway v106, v021
Intraclass Asy.
correlation S.E. [95% Conf. Interval]
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0.25242 0.01320 0.22655 0.27829
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and after melogit:
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melogit v106, || v021:
esttat ICC
Level | ICC Std. Err. [95% Conf. Interval]
-----------------------------+------------------------------ ------------------
v021 | .3073749 .0158921 .2771332 .3393674
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As you can see, these two methods produce dissimilar results. Despite the necessity of using -melogit- being obvious, I'd like to know the right course of action to follow: before/after/both?
Thank you.
Dr Ghose
[Updated on: Tue, 30 March 2021 09:37] Report message to a moderator |
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| Re: Calculating ICC [message #22557 is a reply to message #22544] |
Wed, 31 March 2021 16:33  |
Bridgette-DHS
Messages: 3214
Registered: February 2013
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Senior Member |
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Following is a response from DHS Research & Data Analysis Director, Tom Pullum:
I really don't know why the two procedures give you such different estimates, but since you will be proceeding with melogit, I recommend that you use the ICC estimate coming from melogit rather than from loneway.
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