Figure 2

Markov chain analysis of changes in QIDS-SR daily scores for individual participants pre- and post-treatment. Circle size represents the probability of a patient being in a certain mood state: red circles represent moderate levels of depression (QIDS-SR⩾9); orange circles represent mild levels of depression (QIDS-SR⩽9 and not equal to 0); green circles represent the absence of any depressive symptoms (QIDS-SR=0). For a given participant, this gives a picture of transition between states during their 28-day baseline phase (front triangle) which can be compared with their 28-day post-treatment phase (back triangle).