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Topic revision: 06 Apr 2012, MaryBanach
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Title: Generalized Linear Regression for Count Data
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| Type of Tool | SAS Macro |
| Title | Generalized Linear Regression for Count Data |
| Programmer/Email | RuiChen |
| Contributing Site | Rochester |
| Description | This is a macro for performing Poisson regression for count data. The macro will automatically check for overdipersion based on the scale parameter. If the estimated scale parameter (computed either by deviance or by Pearson chi-square, whichever is bigger) is larger than the cutpoint (specified by users), alternative model (such as Sandwich variance estimate using GEE or negative binomial regression) is also provided. |
| Classification Graph Type | |
| References | |
| Datasets | |
| Data | |
| Software Program | SAS |
| Software | SAS |
| Macro Parameters | DSName: Name of SAS data set. Dir: Directory where the output file is saved. If it is unspecified, the output file is saved under C:\ (Windows) or Home directory (Linux). ID: Name of the variable for object ID. Outcome: Name of outcome variable. PredictNum: Name of the continuous covariates. PredictClass: Name of the categorical covariates. The reference could be specified using SAS syntax. For example, gender(ref="female") is allowed. Make sure there is no space between the variable name and reference specification. For example, gender (ref="female") is NOT acceptable. Format: Formats of tshe variables with with the same order in PredictClass. if no format defined for the corresponding qualitattive variable, a dot (.) must be input as a place holder. ScaleCutpoint: Cutpoint for the scale parameter to be considered overdispersion AlternateMod: Alternative model is overdispersion is detected -GEE: Sandwich variance-covariance estimate. -NB: Negative binomial regression. -ZIP: Zero Inflated Poisson regression. OutForm: Format of output file. HTML or RTF. |
| R-Code - Attachment | |
| R-Code | |
| SAS-Code - Attachment | Rochester_Count Reg_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 | July 15, 2010 |
| Example Code | SAS Example Code |
| Example Output | SAS Example Output |
| SAS Examples | |
| SAS_Example_Code | Rochester_Count Reg_ SAS Example Code |
| SAS_Example_Output | Rochester_Count Reg_SAS Example Output |
| R Examples | |
| R_Example_Code | |
| R_Example_Output | |
| Stats Examples | |
| Special Features | |
| Special Features Attached | |
| Special Features Text | |
| 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 | UCSF_Logistic Regression Rochester_Linear Regression |
| Checklists | |
| Stat Tools Disclaimer | This SAS macro is developed by Rui Chen and other members 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, July, 2009 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