High correlation but inadequate point-to-point agreement, between conventional mechanical and electronical visual analogue scale for assessment of acute postoperative pain after general surgery
Department of General-, Visceral-, Vascular- and Thoracic Surgery, Charité-University Medicine Berlin, Campus Mitte, Schumannstrasse 20/21, D-10117 Berlin, Germany
Received 21 April 2006; received in revised form 27 August 2006; accepted 28 August 2006.
PII: S1366-0071(06)00119-7
doi:10.1016/j.acpain.2006.08.043
© 2006 Elsevier B.V. All rights reserved.
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