Figure 2.

Fitted proportions: logistic regression model for bipolar disorder. The logistic equation is: -3.73 + 3.81 (Arth/Rheum) - 0.027 (Age) + 0.90 (Sex) - 0.063 (Arth/Rheum by Age) - 2.41 (Arth/Rheum by Sex) - 0.012 (Age by Sex) + 0.056 (Arth/Rheum by Age by Sex). Fitted proportions: odds/1 + odds