Symptoms analysis for the diagnosis of genuine stress incontinence

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Abstract
To determine the accuracy of an analysis of symptoms alone for the diagnosis of genuine stress incontinence. A comparison of results of symptoms analysis with urodynamic findings. A gynaecological video-urodynamic unit. 252 consecutive patients referred for urodynamic investigations. A questionnaire of 20 symptoms of lower urinary tract dysfunction, midstream specimen of urine, pad testing, uroflowmetry, and video-cystourethrography. Using the urodynamic diagnosis as the 'gold standard', the accuracy of discriminant function analysis of symptoms was determined. Symptoms analysis achieved a correct classification of 81% with a false positive rate of 16%. Use of an accumulative probability curve defines patients who fall into the equivocal range. All women presenting with incontinence should undergo preoperative urodynamic studies.