Linked Life Data

15456108

Source:http://linkedlifedata.com/resource/pubmed/id/15456108

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2004-9-30
pubmed:abstractText
Grønnesby and Borgan (1996, Lifetime Data Analysis 2, 315-328) propose an omnibus goodness-of-fit test for the Cox proportional hazards model. The test is based on grouping the subjects by their estimated risk score and comparing the number of observed and a model based estimated number of expected events within each group. We show, using extensive simulations, that even for moderate sample sizes the choice of number of groups is critical for the test to attain the specified size. In light of these results we suggest a grouping strategy under which the test attains the correct size even for small samples. The power of the test statistic seems to be acceptable when compared to other goodness-of-fit tests.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1380-7870
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
283-91
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
A cautionary note on the use of the Grønnesby and Borgan goodness-of-fit test for the Cox proportional hazards model.
pubmed:affiliation
Division of Biostatistics, Department of Family and Preventive Medicine, University of California, San Diego, CA, USA.
pubmed:publicationType
Journal Article