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    Interventional procedure overview of electrically stimulated intravesical therapy for interstitial cystitis or overactive bladder in adults

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    Outcome measures

    Reduction of urinary symptoms, including voiding frequency, and improvement in quality of life were the main outcomes reported for both indications. For interstitial cystitis, reduction of pain was also reported.

    The KHQ was used as an outcome measure in 2 studies on OAB. This is a self-reported questionnaire designed to evaluate the impact of urinary incontinence on quality of life. There are 8 domains scored between 0 (best) and 100 (worst) and a symptom severity scale that is scored from 0 (best) to 30 (worst). Decreases in the KHQ domain scores indicate an improvement in quality of life. The minimally important difference has been reported as 3 points for the symptom severity scale and 5 points for all other KHQ domains.

    One randomised prospective study on interstitial cystitis assessed the treatment response using the GRA. The GRA was defined as follows:

    • 1: worse

    • 2: no change

    • 3: slightly better

    • 4: moderately better

    • 5: much better

    • 6: completely cured.

    People who reported categories 4 to 6 were considered to have had a response to treatment (Gulpinar 2014).