Corrections

Randomised, controlled trial of alternating pressure mattresses compared with alternating pressure overlays for the prevention of pressure ulcers: PRESSURE (pressure relieving support surfaces) trial

BMJ 2006; 333 doi: http://dx.doi.org/10.1136/bmj.333.7557.30-b (Published 29 June 2006) Cite this as: BMJ 2006;333:30

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An editorial misunderstanding during the proof stage led us to inflate some values in this paper by Jane Nixon and colleagues (BMJ 2006;332:1413-5, 17 Jun). In table 4 of the full version on bmj.com (table 2 of the abridged version), the haemoglobin levels on admission or preoperatively should be 0.89 (0.82 to 0.97) [not 8.9, 8.2 to 9.7], and the corresponding P value should be 0.01 [not 0.1].

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