Electrical stimulation in any form whether it is faradic, Interferential (or IDC) is only used to train or reeducate the muscles of pelvic floor so that patient may join and can perform the movement by himself. However, when the patient is able to perform the action by himself, the active exercises should be encourged.

Have a look over the guidelines by the Chartered Society of Physiotherapy for Stress Incontinence.

Clinical guidelines for the physiotherapy management of females aged 16–65 years with stress urinary incontinence