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Topic revision: 06 Apr 2012, MaryBanach
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Title: ROC Cutoff
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| Type of Tool | SAS Macro |
| Title | ROC Cutoff |
| Programmer/Email | RuiChen |
| Contributing Site | Rochester |
| Description | The macro is used to find a cutoff for a continuous predictor, which maximizes the linear combination of specificity and sensitivity when the response variable is binary. A final logistic regression will fit a model using the resulting cutoff. |
| Example | Example code |
| Classification Graph Type | |
| References | |
| Datasets | |
| Data | |
| Software Program | SAS |
| Software | SAS |
| Macro Parameters | DSName = name of SAS data set Dir = directory the result file saved. ID = name of unique id for each observation. Outcome = name of outcome binary variable. PredictNum = name of numeric predictor variable. Format = format of the outcome variable. WSpec = any number within the interval [0,1], which maximizes WSpec*specificity+(1-WSpec)*sensitivity e.g. if WSpec=1, the cutpoint is found to maximize the specificity if WSpec=0, the cutpoint is found to maximize the sensitivity if WSpec=0.5, the cutpoint is found to maximize the sum of the specificity and sensitivity OutForm = HTML or RTF, Format of output file; |
| R-Code - Attachment | |
| R-Code | |
| SAS-Code - Attachment | Rochester_ROC Cutoff_Main Macro |
| SAS-Code | |
| Stata-Code - Attachment | |
| Stata-Code | |
| Other Code - Attachment | |
| Other Code | |
| Called Data Manipulation | |
| Called Tool/Utility | |
| Called Checking Macro | |
| Called Other | |
| Creation-Date | |
| Revision-Date | |
| Example Code | SAS Example Code |
| Example Output | SAS Example Output |
| SAS Examples | |
| SAS_Example_Code | Rochester_ROC Cutoff_ SAS Example Code |
| SAS_Example_Output | Rochester_ ROC Cutoff_SAS Example Output |
| R Examples | |
| R_Example_Code | |
| R_Example_Output | |
| Stats Examples | |
| Special Features | |
| Special Features Attached | |
| Special Features Text | Provide a model ROC |
| Notes1-Legend | Section with calls to needed macros |
| Notes1 | |
| Notes2-Legend | Macro call with fully specified parameters |
| Notes2 | |
| Notes3-Legend | Section with definitions of global macro parameters |
| Notes3 | |
| Notes4-Legend | Section with definitions of local macro variables |
| Notes4 | |
| See Also | |
| Checklists | |
| Stat Tools Disclaimer | This SAS macro is developed by Rui Chen in the Department of Biostatistics and Computational Biology at the University of Rochester under the auspice of the CTSI BERD with the intent to facilitate data analyses and reporting in clinical and related research. It is copyrighted by Dr. Chen, March, 2010 and distributed for free public access. |
| Discliamer | The views expressed within CTSpedia are those of the author and must not be taken to represent policy or guidance on the behalf of any organization or institution with which the author is affiliated. |
| Permission | Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT OLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| Reference Image |
Topic revision: 06 Apr 2012, MaryBanach
Copyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors. Ideas, requests, problems regarding Foswiki? Send feedback