The GENMOD Procedure
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Overview
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Getting Started
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Syntax
PROC GENMOD Statement ASSESS Statement BAYES Statement BY Statement CLASS Statement CONTRAST Statement DEVIANCE Statement EFFECTPLOT Statement ESTIMATE Statement EXACT Statement EXACTOPTIONS Statement FREQ Statement FWDLINK Statement INVLINK Statement LSMEANS Statement LSMESTIMATE Statement MODEL Statement OUTPUT Statement Programming Statements REPEATED Statement SLICE Statement STORE Statement STRATA Statement VARIANCE Statement WEIGHT Statement ZEROMODEL Statement
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Details
Generalized Linear Models Theory Specification of Effects Parameterization Used in PROC GENMOD Type 1 Analysis Type 3 Analysis Confidence Intervals for Parameters F Statistics Lagrange Multiplier Statistics Predicted Values of the Mean Residuals Multinomial Models Zero-Inflated Models Generalized Estimating Equations Assessment of Models Based on Aggregates of Residuals Case Deletion Diagnostic Statistics Bayesian Analysis Exact Logistic and Exact Poisson Regression Missing Values Displayed Output for Classical Analysis Displayed Output for Bayesian Analysis Displayed Output for Exact Analysis ODS Table Names ODS Graphics
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Examples
Logistic Regression Normal Regression, Log Link Gamma Distribution Applied to Life Data Ordinal Model for Multinomial Data GEE for Binary Data with Logit Link Function Log Odds Ratios and the ALR Algorithm Log-Linear Model for Count Data Model Assessment of Multiple Regression Using Aggregates of Residuals Assessment of a Marginal Model for Dependent Data Bayesian Analysis of a Poisson Regression Model Exact Poisson Regression
- References
Syntax: GENMOD Procedure
You can specify the following statements in the GENMOD procedure. Items within the <> are optional.
- PROC GENMOD <options> ;
- ASSESS | ASSESSMENT VAR=(effect) | LINK </ options> ;
- BAYES <options> ;
- BY variables ;
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CLASS
variable <(options)>
<variable <(options)>> </ options>
; - CONTRAST ’label’ contrast-specification </ options> ;
- DEVIANCE variable = expression ;
- EFFECTPLOT <plot-type <(plot-definition-options)>> </ options> ;
- ESTIMATE ’label’ effect values <,...effect values> </ options> ;
- EXACT <’label’> <INTERCEPT> <effects> </ options> ;
- EXACTOPTIONS options ;
- FREQ | FREQUENCY variable ;
- FWDLINK variable = expression ;
- INVLINK variable = expression ;
- LSMEANS <model-effects> </ options> ;
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LSMESTIMATE
model-effect <'label'> values <divisor=
> <, ...<'label'> values <divisor=>> < / options>
; - MODEL response = <effects > </ options> ;
- OUTPUT <OUT=SAS-data-set> <keyword=name...keyword=name> ;
- Programming statements ;
- REPEATED SUBJECT=subject-effect </ options> ;
- SLICE model-effect </ options> ;
- STORE <OUT=>item-store-name </ LABEL='label'> ;
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STRATA
variable <(option)> <variable <(option)>> </ options>
;
- WEIGHT | SCWGT variable ;
- VARIANCE variable = expression ;
- ZEROMODEL <effects > </ options> ;
The ASSESS, BAYES, BY, CLASS, CONTRAST, DEVIANCE, ESTIMATE, FREQUENCY, FWDLINK, INVLINK, MODEL, OUTPUT, programming statements, REPEATED, VARIANCE, WEIGHT, and ZEROMODEL statements are described in full after the PROC GENMOD statement in alphabetical order. The EFFECTPLOT, LSMEANS, LSMESTIMATE, SLICE, and STORE statements are common to many procedures. Summary descriptions of functionality and syntax for these statements are also given after the PROC GENMOD statement in alphabetical order, and full documentation about them is available in Chapter 19, Shared Concepts and Topics.
The PROC GENMOD statement invokes the procedure. All statements other than the MODEL statement are optional. The CLASS statement, if present, must precede the MODEL statement, and the CONTRAST and EXACT statements must come after the MODEL statement.