A short-cut review was carried out to establish whether pelvic immobilisation with a pelvic compression device or with a wrapped sheet would provide haemorrhage control. Four studies were relevant to the question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these papers are shown in table 3. The clinical bottom line is that both may provide some haemorrhage control, but there is insufficient evidence to recommend one over the other