Three previous trials have collapsed.
Two previous trials have also found progesterone useful in preventing preterm births among women with a short cervix, another known risk group.
While scientists on the project are optimistic, previous trials have yielded mixed results: trial data in 2011 and 2012 showed only reduced episodes of malaria in babies aged six to 12 weeks, although this percentage improved in data from children aged five to 17 months.
Previous trials have taken place in the suburbs of Los Angeles in the US, where early results have been promising.
Previous trials have suggested clinical benefit with rescue percutaneous coronary intervention (PCI) after failed fibrinolysis, but more recent, larger studies are conflicting.
Previous trials have demonstrated that although all β-blockers effectively reduce blood pressure, there are differences in how they affect various metabolic factors.
Previous trials have reported improved visual acuity (VA), but lacked detailed analysis of retinal structure and function in the treated area.
Previous trials have shown that the number of procedures done by a single surgeon, that is, surgical volume (SV), is associated with several outcomes after radical prostatectomy (RP).
No previous trials have investigated the efficacy of supervised pelvic floor muscle training in combination with conservative treatment and compared this to an attention-control massage treatment including conservative treatment.
Previous trials have demonstrated clinically significant and durable reductions in arterial pressure from baroreflex activation therapy (BAT), resulting from electrical stimulation of the carotid sinus using a novel implantable device.
Combined with the removal of the double jeopardy law in some places, this can allow cases to be reopened where previous trials have failed to produce sufficient evidence to convince a jury.
