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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: J Pain. 2013 Dec;14(12 0):10.1016/j.jpain.2013.07.018. doi: 10.1016/j.jpain.2013.07.018

Figure 2. Predicted TMD incidence rates from random forest models: OPPERA prospective cohort study, 2006-2011.

Figure 2

TMD incidence rates, expressed as cases per 100-person-years, were generated from random forest models that predicted TMD onset using study site and clinical orofacial characteristics reported in Tables 1-7. Predicted values (●) are plotted together with LOESS-smoothed estimates (- - -) and their 95% confidence intervals (.....). A: Sum of the Oral Behaviors Checklist (OBC) is the simple sum of an ordinal response scale for each of 21 items. B: Inability to open mouth was reported as yes/no. C: Number of face jaw symptoms is the simple count of ‘yes’ responses to each of 6 non-specific orofacial symptoms.