Absorbent products for urinary/faecal incontinence: a comparative evaluation of key product designs

To compare the performance and cost-effectiveness of the key absorbent product designs to provide a more solid basis for guiding selection and purchase. Also to carry out the first stage in the development of a quality of life (QoL) instrument for measuring the impact of absorbent product use on users' lives. Three clinical trials focused on the three biggest market sectors. Each trial had a similar crossover design in which each participant tested all products within their group in random order. SETTING, PARTICIPANTS AND INTERVENTIONS: In Trial 1, 85 women with light urinary incontinence living in the community tested three products from each of the four design categories available (total of 12 test products): disposable inserts (pads); menstrual pads; washable pants with integral pad; and washable inserts. In Trial 2a, 85 moderate/heavily incontinent adults (urinary or urinary/faecal) living in the community (49 men and 36 women) tested three (or two) products from each of the five design categories available (total of 14 test products): disposable inserts (with mesh pants); disposable diapers (nappies); disposable pull-ups (similar to toddlers' trainer pants); disposable T-shaped diapers (nappies with waist-band); and washable diapers. All products were provided in a daytime and a (mostly more absorbent) night-time variant. In these first two trials, the test products were selected on the basis of data from pilot studies. In Trial 2b, 100 moderate/heavily incontinent adults (urinary or urinary/faecal) living in 10 nursing homes (27 men and 73 women) evaluated one product from each of the four disposable design categories from Trial 2a. Products were selected on the basis of product performance in Trial 2a and, again, day time and night-time variants were provided. The first phase of developing a QoL tool for measuring the impact of using different pad designs was carried out by interviewing participants from Trials 1 and 2a. Product performance (e.g. comfort, discreetness) was characterised using a weekly validated questionnaire. A daily pad change and leakage diary was used to record severity of leakage, numbers of laundry items and pads. Skin health changes were recorded weekly. At a final interview preferences were ranked, acceptability of each design recorded, and overall opinion marked on a visual analogue scale (VAS) of 0-100 points. This VAS score was used to estimate cost-effectiveness. In addition, a timed pad changing exercise was conducted wi