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The Egyptian Journal of Bronchology
Fig. 2 | The Egyptian Journal of Bronchology

Fig. 2

From: Acute severe asthma in emergency department: clinical characteristics, risk factors, and predictors for poor outcome

Fig. 2

ROC curve shows accuracy of PEFR in prediction of severe acute exacerbation in asthmatic patients. PEFR, peak expiratory flow rate. Baseline PEFR (blue line) cut-off point< 80 (sensitivity 45%, specificity 89%, accuracy 64.8%, and AUC 0.70), PEFR after 1 h (green line) cut-off point < 260 (sensitivity 100%, specificity 62%, accuracy 82.9%, and AUC 0.81), and PEFR after 6 h (orange line) cut-off point < 110 (sensitivity 65%, specificity 88.2%, accuracy 75.5%, and AUC 0.72).

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