Abstract
Background: Tailoring healthcare to patients’ individual needs is a central goal of precision medicine. Combining smartphone-based interventions with machine learning approaches may help attaining this goal. The aim of our study was to explore the predictability of the success of smartphone-based psychotherapeutic micro-interventions in eliciting mood changes using machine learning. Methods: Participants conducted daily smartphone-based psychotherapeutic micro-interventions, guided by short video clips, for 13 consecutive days. Participants chose one of four intervention techniques used in psychotherapeutic approaches. Mood changes were assessed using the Multidimensional Mood State Questionnaire. Micro-intervention success was predicted using random forest (RF) tree-based mixed-effects logistic regression models. Data from 27 participants were used, totaling 324 micro-interventions, randomly split 100 times into training and test samples, using within-subject and between-subject sampling. Results: Mood improved from pre- to post-intervention in 137 sessions (initial success-rate: 42.3%). The RF approach resulted in predictions of micro-intervention success significantly better than the initial success-rate within and between subjects (positive predictive value: 0.732 (95%-CI: 0.607; 0.820) and 0.698 (95%-CI: 0.564; 0.805), respectively). Prediction quality was highest using the RF approach within subjects (rand accuracy: 0.75 (95%-CI: 0.641; 0.840), Matthew's correlation coefficient: 0.483 (95%-CI: 0.323; 0.723)). Limitations: The RF approach does not allow firm conclusions about the exact contribution of each factor to the algorithm's predictions. We included a limited number of predictors and did not compare whether predictability differed between psychotherapeutic techniques. Conclusions: Our findings may pave the way for translation and encourage scrutinizing personalized prediction in the psychotherapeutic context to improve treatment efficacy.
Original language | English |
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Pages (from-to) | 430-437 |
Number of pages | 8 |
Journal | Journal of Affective Disorders |
Volume | 264 |
DOIs | |
Publication status | Published - 2020 Mar 1 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea (NRF) within the Global Research Network Program (G.M., M.T., J.L., project no. 2013S1A2A2035364 ); the Swiss National Science Foundation (SNSF) (M.T., project no. PZ00P1_137023 ); the NRF grant, Ministry of Science and ICT (MSIT) of Korea (J.L., project no. NRF-2016M3C7A1914450 ); and the National Research Council of Science & Technology (NST) grant by the Korea government (MSIT) (J.L., project no. CAP-18-01-KIST ). Further, GM received funding from the Stanley Thomas Johnson Stiftung & Gottfried und Julia Bangerter-Rhyner-Stiftung (projects no. PC_28/17 and PC_05/18 ); from the International Psychoanalytic University (IPU) Berlin; from Gesundheitsförderung Schweiz (project no. 18.191); and from the SNSF (project no. 1000014_135328 ).
Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) within the Global Research Network Program (G.M., M.T., J.L., project no. 2013S1A2A2035364); the Swiss National Science Foundation (SNSF) (M.T., project no. PZ00P1_137023); the NRF grant, Ministry of Science and ICT (MSIT) of Korea (J.L., project no. NRF-2016M3C7A1914450); and the National Research Council of Science & Technology (NST) grant by the Korea government (MSIT) (J.L., project no. CAP-18-01-KIST). Further, GM received funding from the Stanley Thomas Johnson Stiftung & Gottfried und Julia Bangerter-Rhyner-Stiftung (projects no. PC_28/17 and PC_05/18); from the International Psychoanalytic University (IPU) Berlin; from Gesundheitsf?rderung Schweiz (project no. 18.191); and from the SNSF (project no. 1000014_135328).
Publisher Copyright:
© 2019
Keywords
- Binary classification
- Ecological momentary intervention
- Internet- and mobile-based intervention
- Mental disorder
- Mhealth
- Supervised learning
ASJC Scopus subject areas
- Clinical Psychology
- Psychiatry and Mental health