[Comparative analysis of rate scales of urinary incontinence in women]

Rate scales are used to analyse urinary incontinence. There are many scales making it difficult to compare the different studies of urinary incontinence. The purpose of this study was to evaluate and compare the rate scales pertaining specifically to urinary incontinence.

A review of the literature was performed for publications specifically addressing rate scales of urinary incontinence. Each scale was evaluated using the following four criteria: principal characteristics (reference source, number of items addressed, scoring method, language), objectives (type of incontinence, severity and quality of life measures), psychometric properties (scientific validity, reliability and responsiveness) and linguistic validation.

Thirteen scales were identified. These were divided into two groups: (1) those based on "classifications" and (2) those based on specific questionnaires. Scales based on classifications were not precise and are never scientifically validated. Scales based on questionnaires were more elaborate and more detailed; nevertheless, the study of their psychometric properties was often incomplete.

Classification-based rate scales are inadequate to analyse urinary incontinence. Questionnaire-based rate scales are superior, but at minimum, they should address the previously stated objective and psychometric criteria. The choice of questionnaire should depend on whether it is to be used in clinical practice or for research protocol.