Figure 2a-2b.

Individual trajectories of child symptoms across treatment as a function of pre-treatment parental depressive symptoms, by child-report (2a) and parent-report (2b).

Mixed equation for both models:

$${\mathit{\text{Youth Symptoms}}}_{\mathit{\text{ti}}}={\beta }_{\mathit{00}}+{\beta }_{\mathit{01}}\ast \mathit{\text{BSI}}\_{\mathit{\text{PRE}}}_i+{\beta }_{\mathit{10}}\ast {\mathit{\text{Day}}}_{ti}+{\beta }_{\mathit{20}}\ast {\mathit{\text{Child age}}}_{ti}+r_{\mathit{0}i}+r_{\mathit{1}i}\ast {\mathit{\text{Day}}}_{ti}+e_{ti}$$