Intermittent Catheterization Adherence Scale (ICAS): A new tool for the evaluation of patient adherence with clean intermittent self-catheterization

AIM: Patients who have successfully acquired the intermittent self-catheterization (ISC) technique can be expected to use it on a long-term basis. The aim of the present study is to present a validated evaluation scale, referred to as the ICAS (Intermittent Catheterization Adherence Scale), which can be used to assess long-term patient adherence to prescribed ISC treatment. METHODS: The scale was validated in neurologic and non neurologic patients in an experienced French neurourology center, between September 2014 and February 2016. Eight items were chosen, providing a relatively objective insight into the degree to which patients reduce the frequency of their ISC procedures. Various factors, including the patients' understanding of the procedure, its relevance to their specific condition, as well as their acceptance of its psychological and inherently time-consuming drawbacks, were evaluated. The ISC construct validity and reproducibility, based on internal test-retest consistency and test-retest reliability, were measured using the Intra-class Correlation Coefficient (ICC). RESULTS: The ICAS was validated in 222 patients (133 females, 89 males, mean age 53 ± 11 years). The patients' comprehension of the questions was found to be good, and the questionnaire was well accepted. Cronbach's alpha was 0.73. The ICC test-retest consistency was also found to be good. CONCLUSION: The ICAS is a simple, acceptable, valid and reproducible test, and in some cases it may facilitate the medical follow-up of ISC patients. In the clinical environment, it is found to be a valuable tool, which can assist medical staff in the prevention of complications related to ISC non-compliance.