. 2018 Jul 12;5(3):e10200. doi: 10.2196/10200
©Eyal Karin, Blake F Dear, Gillian Z Heller, Milena Gandy, Nickolai Titov. Originally published in JMIR Mental Health (http://mental.jmir.org), 12.07.2018.
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Figure 5.
PHQ-9 estimation error (residual) following fixed (linear) and relative (proportional) change assumption.