Original Investigation

Development and Validation of a Tool to Measure Documented Health Care Encounter Time

JAMA Network Open 10.1001/jamanetworkopen.2026.38034

October 08, 2026 at 11:00 AM EDT

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In this prognostic study of the MASCC TIME tool, it was found to be associated with excellent content validity, improved accuracy, high interrater reliability, and acceptable feasibility for standardized measurement of documented health care encounter time. Standardized assessment of time toxicity may improve comparability across oncology studies and support more rigorous evaluation of health care–related burden in cancer research.

Corresponding Author: Ronald Chow, MD, MS, MEng, Centre for Evidence-Based Medicine, University of Oxford, Oxford OX2 6GG, United Kingdom (ronald.chow@kellogg.ox.ac.uk).

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