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. 2014 May 16;2014(5):CD010312. doi: 10.1002/14651858.CD010312.pub2

Summary of findings for the main comparison. prostaglandins for retained placenta.

Prostaglandins for retained placenta
Patient or population: women with retained placenta
 Settings: all care setting
 Intervention: prostaglandins
Outcomes Illustrative comparative risks* (95% CI) Relative effect
 (95% CI) No of Participants
 (studies) Quality of the evidence
 (GRADE) Comments
Assumed risk Corresponding risk
Control Prostaglandins
Manual removal of placenta 
 Manual removal after intervention
 Follow‐up: 30‐45 minutes Study population RR 0.82 
 (0.54 to 1.27) 244
 (3 studies) ⊕⊝⊝⊝
 very low1,2,3  
561 per 1000 460 per 1000 
 (303 to 712)
Low
10 per 1000 8 per 1000 
 (5 to 13)
High
30 per 1000 25 per 1000 
 (16 to 38)
Severe postpartum haemorrhage 
 Objectively or subjectively measured after intervention/Estimated blood loss in ML.
 Follow‐up: 30‐45 minutes Study population RR 0.80 
 (0.55 to 1.15) 194
 (2 studies) ⊕⊝⊝⊝
 very low3,4  
432 per 1000 346 per 1000 
 (238 to 497)
Low
30 per 1000 24 per 1000 
 (17 to 34)
High
100 per 1000 80 per 1000 
 (55 to 115)
Blood transfusion 
 Blood transfusion during puerperium
 Follow‐up: 1 to 8 weeks Study population RR 0.72 
 (0.43 to 1.22) 244
 (3 studies) ⊕⊝⊝⊝
 very low3,4  
224 per 1000 161 per 1000 
 (96 to 274)
Low
60 per 1000 43 per 1000 
 (26 to 73)
High
130 per 1000 94 per 1000 
 (56 to 159)
Mean blood loss 
 Objectively or subjectively measured after intervention/Mean blood loss in ML.
 Follow‐up: 30 to 45 minutes The mean blood loss in the control groups was
 0 millilitres The mean blood loss in the intervention groups was
 205.26 lower 
 (536.31 lower to 125.79 higher)   244
 (3 studies) ⊕⊝⊝⊝
 very low1,5,6  
Mean time from injection to placenta removal 
 Mean time from injection to placenta removal.
 Follow‐up: 30 to 45 minutes The mean time from injection to placenta removal in the control groups was
 minutes The mean time from injection to placenta removal in the intervention groups was
 7.0 lower 
 (21.2 lower to 7.2 higher)   99
 (1 study) ⊕⊝⊝⊝
 very low1,6  
Maternal pain between injection and discharge from labour ward 
 Maternal pain between injection and discharge from labour ward
 Follow‐up: 1 to 24 hours Study population RR 0.91 
 (0.43 to 1.96) 124
 (2 studies) ⊕⊝⊝⊝
 very low1,3  
172 per 1000 157 per 1000 
 (74 to 338)
Low
100 per 1000 91 per 1000 
 (43 to 196)
High
200 per 1000 182 per 1000 
 (86 to 392)
Nausea between injection and discharge from labour ward 
 Nausea between injection and discharge from labour ward
 Follow‐up: 1 to 24 hours Study population RR 1.72 
 (0.15 to 19.41) 124
 (2 studies) ⊕⊝⊝⊝
 very low1,2,6  
34 per 1000 59 per 1000 
 (5 to 669)
Low
30 per 1000 52 per 1000 
 (5 to 582)
High
100 per 1000 172 per 1000 
 (15 to 1000)
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
 CI: Confidence interval; RR: Risk ratio;
GRADE Working Group grades of evidence
 High quality: Further research is very unlikely to change our confidence in the estimate of effect.
 Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
 Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
 Very low quality: We are very uncertain about the estimate.

1 Failure to adherence to intention‐to‐treat principle. Selective reporting. Stopping early for benefit.
 2 Large variation in effect. Confidence intervals overlap.Substantial heterogeneity.
 3 Few women and outcome events. Confidence interval include null effect, include appreciable harm or benefit. Not optimal information size.
 4 Lack of blinding. Failure to adherence to intention‐to‐treat principle. Selective reporting. Stopping early for benefit.
 5 Large variation in effect. Confidence intervals do not overlap. Substantial heterogeneity.
 6 Few women. Confidence interval includes null effect, include appreciable harm or benefit. Not optimal information size.