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Accuracy of sputum colour in predicting NB

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1 Accuracy of sputum colour in predicting NB
Accuracy of sputum colour in predicting NB. (A) ROC curve showing the ability of sputum colour score to predict NB. (B) Sensitivity, specificity, positive and negative likelihood ratio (LR+ and LR−, respectively) tabulated for each sputum colour group cut p... Accuracy of sputum colour in predicting NB. (A) ROC curve showing the ability of sputum colour score to predict NB. (B) Sensitivity, specificity, positive and negative likelihood ratio (LR+ and LR−, respectively) tabulated for each sputum colour group cut point to identify participants with NB. LR−, negative likelihood ratio; LR+, positive likelihood ratio; n, number of participants; NB, neutrophilic bronchitis; ROC, receiver operator characteristic. Kavita Pabreja et al. BMJ Open Resp Res 2017;4:e000236 ©2017 by British Thoracic Society

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