Cheng 2017.

Methods	Title: The effect of TENS on postoperative urinary function in early cervical cancer Study design: a multicentre, randomised controlled clinical trial Study setting: China Source: abstract presentation in 42nd Annual Meeting – Vancouver, Canada during June 20 – 24, 2017 Published in: International Urogynecology Journal; Volume 28 (supplement 1). Springer London.
Participants	68 patients with early stage cervical squamous cell carcinoma who underwent Piver III hysterectomy were recruited and randomised to study group (N=30) and control group (N=29).
Interventions	Control group: remove Foley on the 14th postoperative day Intervention: Transcutaneous electrical nerve stimulation (TENS) started on the 7th day after operation, lasting two to three courses, with 7 days for each course. Patients whose residual urine volume less than 100 ml on 14th received two courses of TENS with urinary catheter removed on 14th day post operation, while the rest of them completed three courses whose urinary catheter were keeping till residual urine volume less than 100ml.
Outcomes	‐ Proportion of residual urine more than 100 mL on day 14 post operation ‐ Proportion of participants keeping urinary catheter more than 21 days ‐ Uroflowmetry ‐ Urogenital Distress Inventory‐6 (UDI‐6) score
Notes	The maximum current of TENS was adjusted according to patients' pain intensity, no more than 100 mA.