Journal of the Korean Data and Information Science Society
- Volume 18 Issue 2
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- Pages.471-479
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- 2007
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- 1598-9402(pISSN)
A Proportional Odds Mixed - Effects Model for Ordinal Data
Abstract
This paper discusses about how to build up mixed-effects model for analysing ordinal response data by using cumulative logits. Random factors are assumed to be coming from the designed sampling scheme for choosing observational units. Since the observed responses of individuals are ordinal, a proportional odds model with two random effects is suggested. Estimation procedure for the unknown parameters in a suggested model is also discussed by an illustrated example.