MP12-03 PROTOCOL TO DEVELOP A DIGITAL BIOMARKER TO DETECT DRINKING BEHAVIOR AMONG PATIENTS WITH KIDNEY STONES USING WRIST-WORN INERTIAL SENSORS

INTRODUCTION AND OBJECTIVES:Compliance with increasing fluid intake to produce at least 2.5L of urine daily for stone prevention is commonly below 50%. We have previously shown that patients are interested in utilizing sensors to provide automated lapse detection in fluid intake to improve adherence to recommendations. Wrist-worn inertial sensors can detect drinking behavior with accelerometers and gyroscopes. The purpose of this study was to devise a protocol to test the ability of a wrist sensor to refine the detection of drinking behavior in everyday activities and to evaluate the recruitment process for future clinical trials.METHODS:Patients with kidney stones were recruited to participate in the 70-minute lab sessions. Wrist sensors were worn bilaterally and participants were videotaped performing a variety of daily activities, including drinking from various vessels.RESULTS:36 patients with a history of kidney stones were enrolled to participate out of a total of 56 who were eligible. Six participa...