Table 1.
Group demographics.
Fig 1.
Predicted longitudinal trajectories for strength of hip muscles (A), knee muscles (B), and ankle muscles (C) with age in boys with DMD.
The average predicted trajectory (thick black line), the individual predicted profiles (thinner colored lines), and the actual observed outcomes (colored dots) are displayed. Each color represents one patient with DMD. The estimates for the fixed effects are given in Table 2. DMD, Duchenne muscular dystrophy.
Table 2.
Fixed effects of piecewise models for the longitudinal trajectories of the muscle strength outcomes with age in boys with DMD.
Fig 2.
Predicted longitudinal trajectories for absolute (left column) and unit-less (right column) knee extension ROM (A), hamstrings ROM (B), ankle dorsiflexion with knee extended (C), and ankle dorsiflexion with knee flexed (D) with age in boys with DMD.
The average predicted trajectory (thick black line), the individual predicted profiles (thinner colored lines), and the actual observed outcomes (colored dots) are displayed. Each color represents one patient with DMD. The estimates for the fixed effects are given in Table 3. DMD, Duchenne muscular dystrophy.
Table 3.
Fixed effects of piecewise models for the longitudinal trajectories of the absolute and unit-less ROMs with age in boys with DMD.
Fig 3.
Predicted longitudinal trajectories for muscle size alterations with age in boys with DMD.
The average predicted trajectory (thick black line), the individual predicted profiles (thinner colored lines), and the actual observed outcomes (colored dots) are displayed. Each color represents one patient with DMD. The estimates for the fixed effects are given in Table 4. DMD, Duchenne muscular dystrophy.
Table 4.
Fixed effects of piecewise models for the longitudinal trajectories of the muscle size alterations with age in boys with DMD.