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- Critical analysis of the Dumont et al. uterine balloon randomized controlled trial in Benin and MaliPublished on: 15 October 2017
- Published on: 15 October 2017Critical analysis of the Dumont et al. uterine balloon randomized controlled trial in Benin and Mali
As postpartum hemorrhage (PPH) researchers, and leaders in education and care of maternal health emergencies, from the United States, UK, Canada, India, Peru, Honduras, Zambia, India, Kenya, Tanzania, Colombia and Nepal, we read the Dumont et al paper with great interest. We would like to share our review:
The most fundamental flaw of this paper is that the authors confuse an intention-to-treat study of a clinical pathway of interventions and behaviors, with the efficacy of a device. These are two very different research questions. In order to test the latter via a randomized controlled trial (RCT) the two groups would need to be the similar and subjects that did not even receive the device (or received it in desperation two hours after the diagnosis of uncontrolled PPH) certainly could not be included in the intervention group. Thus, this study attempts to test intention-to-treat, not the efficacy of the uterine balloon tamponade (UBT) device.
The second most obvious flaw is that degrees of illness are not accounted for. Clinically defined "uncontrolled PPH" is in no way a homogeneous group. For example, someone that has been referred in and is moribund from their advanced shock is an entirely different subject than someone who has mild uncontrolled PPH. Since this is not controlled for, these two groups are likely incomparable.
Even taking into account the two issues described above, the two groups are different and heavily favor the non-...
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None declared.