Multilevel Modeling of Periodontal Data (VII)

7 Ordered Categorical Response Models

In several chapters so far we have addressed modeling a binary response variable, for instance gingival bleeding upon periodontal probing, which has only two expressions, yes or no (or 1, 0). Many kinds of response variables are ordered categorical. For instance, the Silness & Löe plaque index, which assesses the amount of supragingival plaque at a certain tooth surface adjacent to the gingival margin, comprises clinically defined situations on a scale of scores from 0 to 3 (Table 7.1).


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6 January 2015, 11:12 am.

Mirrored from Matters arising.



The MLwiN manual using periodontal data has been completed but may be supplemented with further models if applicable.


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