Findings
There is a lack of consensus on outcome measures and adherence definitions across studies using wearables in oncology.
There is significant heterogeneity in study designs and outcomes, making comparisons difficult.
Limited guidelines exist for designing or reporting trials using wearables in oncology.

Recommendations
Establish standardized definitions for wearable outcomes and adherence to improve study comparisons.
Encourage research using advanced wearable devices and active data use.
Conduct more randomized clinical trials to create consensus on implementing wearables in oncological practice.
Develop guidelines for designing and reporting trials using wearables.

Regulatory Considerations
The Clinical Transformation Initiative (CTTI) provides recommendations for the use of mobile technology in clinical trials, which could inform regulatory frameworks.