Chronic TPTNS appears to be effective in the management of severe OAB in MS, without compromising bladder emptying or inducing side effect. Treatment may be effective even in the absence of an acute cystometric effect. Additional works are required to demonstrate long-term efficacy of TPTNS.

SF-Qualiveen has excellent measurement properties, similar to those of the long form. The new instrument is likely to perform well in the clinical and research context.

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