Accuracy of a Mobile Sensor-Based System for the Detection of Chemotherapy Toxicity in Older Adults With Cancer in a Developing Country

"Patients will be instructed to carry the smartphone around their hips during waking hours, regardless of whether they are at home or outside (a nylon hip holster will be provided) and to keep it turned on at all times.~Daily steps will be recorded for at least seven days before the start of chemotherapy, and the median baseline number of daily steps will be calculated for each patient.~On the first day of chemotherapy, patients will receive side effect education as per standard of care. Patients will be instructed to continue carrying the smartphone daily as indicated for the entire duration of the first three chemotherapy cycles.~At the end of the follow-up period (or sooner in cases of early interruption of chemotherapy due to toxicity or disease progression; a change in chemotherapy regimen; or hospitalizations lasting ≥3 days), patients will rate their satisfaction with the intervention using a Likert-scale questionnaire and open-ended questions."