Shahshahan 2014.

Methods	RCT
Participants	Women aged 18 to 35 years, with 38 to 42 week gestation singleton pregnancy and intention to have vaginal birth
Interventions	Intervention 1: women received routine intervention with a support person. Intervention 2: women received routine intervention without a support person. Intervention 3: women did not receive routine intervention with a support person. Intervention 4: women did not receive routine intervention or support person
Outcomes	Length (min) of first and second stage of labour, instrumental delivery, the cervical laceration (yes/no), perineal tear (into 4 categories), pain before and after labour using the numeric rating scale, between 0 (no pain) and 10 (worst pain), satisfied with labour experience
Notes	Unclear of details of this trial. MB contacted authors 25/10/2017. Awaiting response

VAS: visual analogue scale