Validity of the 6 min walk test in prediction of the anaerobic threshold before major non- cardiac surgery R.C.F. Sinclair, A.M. Batterham, S. Davies,

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Validity of the 6 min walk test in prediction of the anaerobic threshold before major non- cardiac surgery R.C.F. Sinclair, A.M. Batterham, S. Davies, L. Cawthorn, G.R. Danjoux British Journal of Anaesthesia Volume 108, Issue 1, Pages 30-35 (January 2012) DOI: 10.1093/bja/aer322 Copyright © 2012 The Author(s) Terms and Conditions

Fig 1 Scatter plot for 6MWT distance (m) vs AT (ml O2 kg−1 min−1). British Journal of Anaesthesia 2012 108, 30-35DOI: (10.1093/bja/aer322) Copyright © 2012 The Author(s) Terms and Conditions

Fig 2 ROC curve for 6MWT distance (m) in discriminating between ‘low’ (<11 ml O2 kg−1 min−1) and ‘high’ (≥11 ml O2 kg−1 min−1) AT. British Journal of Anaesthesia 2012 108, 30-35DOI: (10.1093/bja/aer322) Copyright © 2012 The Author(s) Terms and Conditions

Fig 3 Dot plot of 6MWT distance (m) in patients with an AT <11 ml O2 kg−1 min−1 (‘1’) and ≥11 ml O2 kg−1 min−1 (‘0’). The solid line represents the cut-point (<440 m) derived from the ROC curve analysis with sensitivity and specificity weighted equally. British Journal of Anaesthesia 2012 108, 30-35DOI: (10.1093/bja/aer322) Copyright © 2012 The Author(s) Terms and Conditions