Exploring the predictive capacity of smartphone-based digital phenotyping to monitor pain and physical quality of life in advanced cancer patients, family caregivers, and dyads - Summary - MDSpire

Exploring the predictive capacity of smartphone-based digital phenotyping to monitor pain and physical quality of life in advanced cancer patients, family caregivers, and dyads

  • By

  • Kristen Allen-Watts

  • Andres Azuero

  • Kyungmi Lee

  • Erin R. Harrell

  • Erin Currie

  • Avery C. Bechthold

  • Sally Engler

  • Kayleigh Curry

  • Frank Puga

  • Natashia Bibriescas

  • Arif H. Kamal

  • Christine S. Ritchie

  • George Demiris

  • Alexi A. Wright

  • Marie A. Bakitas

  • Burel R. Goodin

  • J. Nicholas Odom

  • July 6, 2026

  • 0 min

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Objective:

To explore the utility of digital phenotyping in assessing pain and physical quality of life in patients with advanced cancer and their caregivers.

Approach:
  • Participants: 14 patients with advanced cancer and 32 caregivers installed the Beiwe smartphone application for data collection.
  • Data Collection: Passive GPS data were collected over 24 weeks, processed into daily mobility features, and combined with PROMIS measures of pain and physical QOL every 6 weeks.
  • Analysis: Within-person regression models were used to examine associations between mobility features and outcomes, with adjusted R² interpreted as effect size.
Key Findings:
  • Caregiver GPS-derived mobility features predicted a large proportion of variance in patient pain intensity (R² = 0.31) and pain interference (R² = 0.32).
  • Combined caregiver and patient mobility data predicted large variance in caregiver physical QOL (R² = 0.43) and medium-to-large variance in patient pain intensity (R² = 0.16) and pain interference (R² = 0.33).
  • Patient mobility features alone predicted small variance in caregiver physical QOL (R² = 0.02).
  • Mobility features were associated with small variance in patient physical QOL (R² = 0.03), pain intensity (R² = 0.05), and pain interference (R² = 0.08).
Interpretation:

Digital phenotyping may be a useful approach for predicting pain and physical QOL in advanced cancer, particularly when incorporating both patient and caregiver data.

Limitations:
  • Small sample size may limit generalizability.
  • Study duration may not capture long-term trends in pain and QOL.
Conclusion:

Further research is warranted to evaluate digital phenotyping as a novel method for monitoring symptoms and functional outcomes in advanced cancer care.

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