Study	Reason for exclusion
Soltan 2009	Quasi‐RCT (alternate allocation)
Soltan 2010	Quasi‐RCT (alternate allocation)
Gelany 2012	This is an abstract for a PPH treatment study but there is insufficient information to permit 'Risk of bias' assessment.
Letouzey 2013	Study terminated due to recruitment difficulties.
Mohamed 2014	Abstract with insufficient information to assess risk of bias.
Khalil 2014	Abstract with insufficient information to assess risk of bias. Query whether this is report of Khalil 2011 but the limited outcome data do not match. Contacted trial author by email ‐ he replied confirming that this study is separate to Khalil 2011 trial.
Nermeen 2015	Prevention of PPH study
Rahman 2015	This was a trial of TempostatTM ‐ a self‐regulating tamponade device for management of postpartum haemorrhage (see NCT02416089). The trial was terminated.
Purwosonu 2015	Not an RCT. This is an open‐label non‐randomised trial
Rezk 2016	Prevention of PPH study
Anger 2016	This step‐wedge cluster‐RCT looked at a policy of introducing UBT into routine practice.  18 hospitals were randomised and the participants included women with PPH and without PPH.  We have excluded this study because (1) it does not meet the inclusion criteria; and (2) does not give a sensitivity analysis of PPH women that could have been included.
von Beckerath 2016	Abstract with insufficient information to permit 'Risk of bias' assessment. We query whether this is part of Ali 2015a (ongoing) ‐ we have contacted the authors for clarification.
Liu 2016	Not a PPH treatment RCT ‐ comparison of 2 different nursing methods for women who had all had uterine embolisation for PPH
Azmy 2016	Prevention of PPH study
Chen 2017	Prevention of PPH study
Sallam 2019	Prevention of PPH study
Farouk 2018	Prevention of PPH study

PPH: postpartum haemorrhage;RCT: randomised controlled trial; UBT: uterine balloon tamponade.