Jongkolsiri 2009.

Methods	Randomised controlled trial. Randomisation using code kept in a sealed envelope. More clarification on sequence generation and allocation concealment was provided by the authors.
Participants	100 women (50 in each group) with normal vaginal delivery and instrumental delivery, vertex presentation, singleton term pregnancy. Exclusions: 1 case of placenta succenturiata, preterm delivery, maternal and medical complications, fetal compromise or abnormality, post‐term, premature rupture of membranes, APH, history of PPH, previous CS and fetal death. Mixed mode of delivery including normal vaginal and instrumental birth.
Interventions	Cord unclamped and drained immediately after cutting in study group. Cord traction after signs of separation to deliver placenta by Brand‐Andrew manoeuvre and IV Methergine after delivery of placenta in both groups.
Outcomes	Duration of the third stage. Retained placenta (> 30 minutes) and PPH (> 500 ml), the need for blood transfusion.
Notes	There was no statistically significant difference between the control and intervention groups with regard to the mode of delivery (instrumental delivery and normal vaginal delivery). One of researchers was blinded, however, the obstetrician and women were not blinded. Blood drained from the placental cord in the intervention group was measured by scaled container.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Women were randomised to the study group or the control group according to the code kept in a sealed envelope. The author confirmed that sequence generation was by computer random number generator.
Allocation concealment (selection bias)	Low risk	Author confirmed that "after randomization the code was kept in sequentially numbered envelopes, the envelopes were opaque and sealed".
Blinding (performance bias and detection bias) All outcomes	Low risk	Partial blinding: 1 researcher who analysed the data, was blinded. However, the obstetrician and women were not blinded.
Incomplete outcome data (attrition bias) All outcomes	Low risk	1 case of placenta succenturiata was excluded.
Selective reporting (reporting bias)	Low risk
Other bias	Low risk