Skip to main content
. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Neuromuscul Disord. 2014 Nov 20;25(3):238–246. doi: 10.1016/j.nmd.2014.11.010

Figure 2.

Figure 2

Predicted probabilities of ambulating without assistive device by age.

The final time-to-event statistical model was used to generate predicted probability curves for ambulating without assistive device by age. The solid line and pink shaded regions show the predicted probabilities and 95% pointwise confidence intervals if hip flexion MRC grade is ≥ 4. The solid line and blue shaded regions show the predicted probabilities and 95% pointwise confidence intervals if hip flexion strength MRC grade is ≤ 3. Panel A demonstrates the predicted probabilities if age at earliest symptom is assumed to be 45 y. Panel B demonstrates the predicted probabilities if age at earliest symptom is assumed to be 65 y. All illustrated curves assume a history of blepharoptosis surgery. The plots show that marked hip flexion weakness and younger age at symptom onset are each associated with greater probability of using an assistive device at a younger age. MRC=Medical Research Council.