Browsing by Subject "Youden index"

Accuracy and cut-off point selection in three-class classification problems using a generalization of the Youden index

Nakas, C. T.; Alonzo, T. A.; Yiannoutsos, C. T. (2010)

We study properties of the index J(3), defined as the accuracy, or the maximum correct classification, for a given three class classification problem Specifically, using J(3) one can assess the discrimination between the ...

Accuracy of the sleep clinical record for the diagnosis of pediatric moderate-to-severe obstructive sleep apnea syndrome

Mylona A.M., Rapti G., Vavougios G., Lachanas V.A., Liakos P., Skoulakis C., Kaditis A.G., Gourgoulianis K., Alexopoulos E.I. (2022)

Purpose: The sleep clinical record (SCR) has been used to diagnose obstructive sleep apnea syndrome (OSAS) in children when access to polysomnography (PSG) is limited. Our aim was to determine the best SCR score that could ...

Construction of joint confidence regions for the optimal true class fractions of Receiver Operating Characteristic (ROC) surfaces and manifolds

Bantis L.E., Nakas C.T., Reiser B., Myall D., Dalrymple-Alford J.C. (2017)

The three-class approach is used for progressive disorders when clinicians and researchers want to diagnose or classify subjects as members of one of three ordered categories based on a continuous diagnostic marker. The ...

Generalization of Youden index for multiple-class classification problems applied to the assessment of externally validated cognition in Parkinson disease screening

Nakas, C. T.; Dalrymple-Alford, J. C.; Anderson, T.; Alonzo, T. A. (2013)

Routine cognitive screening in Parkinson disease (PD) has become essential for management, to track progression and to assess clinical status in therapeutic trials. Patients with mild cognitive impairment (PD-MCI) are more ...