Cited by 233Mental Health Research TopicsBipolar Disorder and TreatmentDigital Mental Health Interventions

Predicting Mood Disturbance Severity with Mobile Phone Keystroke Metadata: A BiAffect Digital Phenotyping Study

Open access
Zulueta, John, Piscitello, Andrea, Rasic, Mladen, Easter, Rebecca, Babu, Pallavi, Langenecker, Scott A, McInnis, Melvin, Ajilore, Olusola +3 more·2018·Journal of Medical Internet Research

Published version of a preprint

Abstract

BACKGROUND: Mood disorders are common and associated with significant morbidity and mortality. Better tools are needed for their diagnosis and treatment. Deeper phenotypic understanding of these disorders is integral to the development of such tools. This study is the first effort to use passively collected mobile phone keyboard activity to build deep digital phenotypes of depression and mania. OBJECTIVE: The objective of our study was to investigate the relationship between mobile phone keyboard activity and mood disturbance in subjects with bipolar disorders and to demonstrate the feasibility of using passively collected mobile phone keyboard metadata features to predict manic and depressive signs and symptoms as measured via clinician-administered rating scales. METHODS: Using a within-subject design of 8 weeks, subjects were provided a mobile phone loaded with a customized keyboard that passively collected keystroke metadata. Subjects were administered the Hamilton Depression Rating Scale (HDRS) and Young Mania Rating Scale (YMRS) weekly. Linear mixed-effects models were created to predict HDRS and YMRS scores. The total number of keystrokes was 626,641, with a weekly average of 9791 (7861), and that of accelerometer readings was 6,660,890, with a weekly average 104,076 (68,912). RESULTS: =.34, P=.001. Multiple significant variables were demonstrated for each measure. CONCLUSIONS: Mood states in bipolar disorder appear to correlate with specific changes in mobile phone usage. The creation of these models provides evidence for the feasibility of using passively collected keyboard metadata to detect and monitor mood disturbances.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.2196/jmir.9775

Cites

30 of 30 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Passively collected keystroke metadata may be used to predict state changes found in bipolar disorder.

    “Furthermore, passively collected keystroke metadata may also be used to predict state changes found in BD176.”

    From Circadian rhythm disruption and mental health (2020) · cites this paper as [176]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 5

  1. [14]Fox J Weisberg S An R Companion to Applied Regression Internet. Second Edition 2011 Thousand Oaks, CA Sage
  2. [17]De Chourdry M Gamon M Counts S Horvitz E Predicting Depression via Social Media 2013 International Conference on Weblogs and Social Media July 8-11, 2013 Cambridge, MA
  3. [21]Huang A Similarity Measures for Text Document Clustering 2008 New Zealand Computer Science Research Student Conference 2008 2008 New Zealand
  4. [22]Singhal A Modern information retrieval: A brief overview IEEE Data Eng Bull 2001 24 4 43
  5. [34]Ghosh S Ganguly N Mitra B De P TapSense: Combining Self-Report Patterns and Typing Characteristics for Smartphone based Emotion Detection 2017 International Conference on Human-Computer Interaction with Mobile Devices and Services 2017 Vienna, Austria

Cited by

Sorted by citations

Authors
Zulueta, J., Piscitello, A., Rasic, M., Easter, R., Babu, P., Langenecker, S. A., McInnis, M., Ajilore, O., Nelson, P. C., Ryan, K., & Leow, A.
Affiliations
  • University of Illinois Chicago (US)
  • University of Michigan (US)
Corresponding author
Leow, Alex
Venue
Journal of Medical Internet Research
Published
2018-07-20
Volume
20
Issue
7
Pages
e241
ISSN
1438-8871 (ISSN-L)
OpenAlex
W2805638371
Cited by
233
References
28
Citations by year
2026: 20 · 2025: 17 · 2024: 11 · 2023: 30 · 2022: 35 · 2021: 74 · 2020: 29 · 2019: 16 · 2018: 1
FWCI
39.29
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Medical Internet Research (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Robert Wood Johnson Foundation
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
Keywords
digital phenotyping, mood disorders, bipolar disorder, depression, mania, passive data collection, Hamilton Depression Rating Scale, Young Mania Rating Scale, accelerometer data, smartphone usage patterns
MeSH terms
Female, Humans, Male, Middle Aged, Phenotype, Cohort Studies, Mood Disorders, Cell Phone

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review