Figure 2.

Frailty and intermediate frailty vs. TT at the third wave of the MMAS, stratified by (CAG)n. Solid lines depict fitted values from regression of frailty on FT, using a generalized additive model and logit link function; 95% confidence intervals are presented with dotted lines. Rug plots at the top and bottom of the figure depict raw TT values for frail and intermediate (top) and nonfrail (bottom) subjects. There is little evidence that (CAG)n modifies the relation between TT and frailty, as indicated by the similarity in the fitted lines and the substantial overlap in confidence regions.