Incontinence during and following hospitalisation: a prospective study of prevalence, incidence and association with clinical outcomes.

BACKGROUND: Incontinence is common in hospitalised older adults but few studies report new incidence during or following hospitalisation. OBJECTIVE: To describe prevalence and incidence of incontinence in older inpatients and associations with clinical outcomes. DESIGN: Secondary analysis of prospectively collected data from consecutive consenting inpatients age 65 years and older on medical and surgical wards in four Australian public hospitals. METHODS: Participants self-reported urinary and faecal incontinence 2 weeks prior to admission, at hospital discharge and 30 days after discharge as part of comprehensive assessment by a trained research assistant. Outcomes were length of stay, facility discharge, 30-day readmission and 6-month mortality. RESULTS: Analysis included 970 participants (mean age 76.7 years, 48.9% female). Urinary and/or faecal incontinence was self-reported in 310/970 (32.0%, [95% confidence interval (CI) 29.0-35.0]) participants 2 weeks before admission, 201/834 (24.1% [95% CI 21.2-27.2]) at discharge and 193/776 (24.9% [95% CI 21.9-28.1]) 30 days after discharge. Continence patterns were dynamic within the peri-hospital period. Of participants without pre-hospital incontinence, 74/567 (13.1% [95% CI 10.4-16.1) reported incontinence at discharge and 85/537 (15.8% [95% CI 12.8-19.2]) reported incontinence at 30 days follow-up. Median hospital stay was longer in participants with pre-hospital incontinence (7 vs. 6 days, P = 0.02) even in adjusted analyses and pre-hospital incontinence was significantly associated with mortality in unadjusted but not adjusted analyses. CONCLUSION: Pre-hospital, hospital-acquired and new post-hospital incontinence are common in older inpatients. Better understanding of incontinence patterns may help target interventions to reduce this complication.