Part 5: Receiver Operating Characteristic Curve and Area under the Curve
Multiple diagnostic tools are used by emergency physicians,<br />every day. In addition, new tools are evaluated to obtain<br />more accurate methods and reduce time or cost of conventional<br />ones. In the previous parts of this educational<br />series, we described diagnos...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Shahid Beheshti University of Medical Sciences
2016-04-01
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| Series: | Emergency |
| Online Access: | http://journals.sbmu.ac.ir/emergency/article/view/11903 |
| Summary: | Multiple diagnostic tools are used by emergency physicians,<br />every day. In addition, new tools are evaluated to obtain<br />more accurate methods and reduce time or cost of conventional<br />ones. In the previous parts of this educational<br />series, we described diagnostic performance characteristics<br />of diagnostic tests including sensitivity, specificity, positive<br />and negative predictive values, and likelihood ratios. The<br />receiver operating characteristics (ROC) curve is a graphical<br />presentation of screening characteristics. ROC curve is used<br />to determine the best cutoff point and compare two or more<br />tests or observers by measuring the area under the curve<br />(AUC). In this part of our educational series, we explain ROC<br />curve and two methods to determine the best cutoff value. |
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| ISSN: | 2345-4563 2345-4571 |