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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
Min, A.; Czado, C. 
Nicht-TUM Koautoren:
nein 
Kooperation:
Titel:
Testing for zero-modification in count regression models 
Abstract:
Count data often exhibit overdispersion and/or require an adjustment for zero outcomes with respect to a Poisson model. Zero-modified Poisson (ZMP) and zeromodified generalized Poisson (ZMGP) regression models are useful classes of models for such data. In the literature so far only score tests are used for testing the necessity of this adjustment. We address this problem by using Wald and likelihood ratio tests. We show how poor the performance of the score tests can be in comparison to the per...    »
 
Intellectual Contribution:
Discipline-based Research 
Zeitschriftentitel:
Statistica Sinica 
Jahr:
2010 
Band / Volume:
20 
Heft / Issue:
Seitenangaben Beitrag:
323-341 
Reviewed:
ja 
Sprache:
en 
Status:
Erstveröffentlichung 
Format:
Text 
Key publication:
Nein 
Peer reviewed:
Ja 
International:
Ja 
Book review:
Nein 
commissioned:
not commissioned 
Professional Journal:
Nein