An AUC of 1 indicates a perfect test in predicting obstruction.
Recursive partition analysis (RPA) [ 13] was then performed to test the ability of NIRS relative amplitudes to predict obstruction.
The sensitivity and specificity in predicting obstruction together with the area under the receiver-operating curve (AUC) were calculated.
RPA was performed to test the ability of the combined data of prostate volume, IPSS, and Qmax to predict obstruction.
Contraception is of little use to women who are already pregnant and there is no reliable screening test to predict obstruction in advance of labor.
Cough symptoms may predict obstruction of peripheral airways in addition to smoking history, the likelihood ratio being between 5.3 and 2.5 for the various cough symptoms.
11– 15 However, there have been no long-term follow-up studies investigating the ability of TEG to predict obstruction and hemorrhagic events.
Other variables, particularly current smoking-related ones, did not predict obstruction severity (Table 2); whereas, in neversmokers, only older age showed a significant prediction of obstruction severity (beta = −1.77).
When the optimal cut-off value for MA determined by ROC curve analysis was used, the sensitivity of MA ≥ 63.5 mm in predicting obstruction was found to be 47.4% and specificity 75% (area under ROC curve 0.58).
We also used the most recent FEV1 results in the notes to categorise patients according to NICE criteria for categorising airflow obstruction (FEV1 50 80% of predicted, mild obstruction; FEV1 30 49% predicted, moderate obstruction; FEV1 < 30% predicted, severe obstruction)[ 1].
McCrath et al 7 used TEG to evaluate occurrence of postoperative obstruction in 240 patients who received non-cardiac surgical treatment, and found that MA > 68 mm was significantly correlated with occurrence of postoperative obstruction, the sensitivity of predicting postoperative obstruction being 80% and specificity being 62%.
