Table 5 Amount of explained variance per model

_Total R²

(0→I)

\( \frac{\left(0.47-5.75\right)-\left(0.41+5.68\right)}{\left(0.47+5.75\right)} \)

=0.13

_{Therapist variables}R²

(I→III)

\( \frac{0.41-0.12}{0.41} \)

=0.71

_{Patient variables}R²

(0→I)

\( \frac{5.75-5.68}{5.75} \)

=0.01