Stage: Registered study; results unpublished
A UMIN registration disclosed on April 15, 2025 describes a Yokohama Medical Center study using Koyo’s Diaper Navi. The planned randomized study compares the device with conventional diapers and evaluates interventions associated with support for independent urination.
The target sample is 200, not a confirmed enrolment count. The record lists a planned start in November 2024 and final follow-up in March 2026, but results remain unpublished in the record checked by WDO. Those planned dates do not establish completion or effectiveness.