"Faith and a sunny day": Association of patient frailty with strain experienced by informal caregivers of older adults with non-muscle-invasive bladder cancer.

In this cross-sectional study, we found that worsening frailty in an older adult with NMIBC was associated with greater informal caregiver strain. Informal caregivers reported challenges with emotional management, family dynamics, and medical tasks. These findings may inform longitudinal research and interventions to support informal caregivers who provide care for older adults with NMIBC.