1. A proposal for a new scoring system to predict difficult ventilation through a supraglottic airway 
T. Saito, S.T.H. Chew, W.L. Liu, K.K. Thinn, T. Asai, L.K. Ti 
British Journal of Anaesthesia 
Volume 117, Pages i83-i86 (September 2016)
DOI: /bja/aew191
Copyright © 2016 The Author(s) Terms and Conditions

2. Fig 1
Receiver operating characteristic curve analysis for the validation data set. The area under the curve for the difficult ventilation via a supraglottic airway device ROC curve was 0.75 (95% CI=0.66–0.84).
British Journal of Anaesthesia  , i83-i86DOI: ( /bja/aew191)
Copyright © 2016 The Author(s) Terms and Conditions

3. Fig 2
Receiver operating characteristic curve analysis for the derivation data set. The area under the curve for the difficult ventilation via a supraglottic airway device ROC curve was 0.80 (95% CI= 0.75–0.86).
British Journal of Anaesthesia  , i83-i86DOI: ( /bja/aew191)
Copyright © 2016 The Author(s) Terms and Conditions