AUC, area under the curve; PPV, positive predictive values; NPV, negative predictive values; PCC: percentages correctly classified; Odds ratio, odds ratio of characteristic variables for predicting BHR; 95% CI, 95% confidence interval of odds ratio; P value, the pvalue of the logistic regression test.
The other abbreviations are as defined for Table 1
The cut-off points were selected by maximizing the sum of sensitivity and specificity.
Bold font indicates AUC higher than 0.7.
Table 4. Predictive values of the combination of different variables with FENO in predicting bronchial hyperresponsiveness