Time-varying covariate (original) (raw)
A time-varying covariate (also called time-dependent covariate) is a term used in statistics, particularly in survival analyses. It reflects the phenomenon that a covariate is not necessarily constant through the whole study. For instance, if one wishes to examine the link between area of residence and cancer, this would be complicated by the fact that study subjects move from one area to another. The area of residency could then be introduced in the statistical model as a time-varying covariate. In survival analysis, this would be done by splitting each study subject into several observations, one for each area of residence. For example, if a person is born at time 0 in area A, moves to area B at time 5, and is diagnosed with cancer at time 8, two observations would be made. One with a le
| Property | Value |
|---|---|
| dbo:abstract | A time-varying covariate (also called time-dependent covariate) is a term used in statistics, particularly in survival analyses. It reflects the phenomenon that a covariate is not necessarily constant through the whole study. For instance, if one wishes to examine the link between area of residence and cancer, this would be complicated by the fact that study subjects move from one area to another. The area of residency could then be introduced in the statistical model as a time-varying covariate. In survival analysis, this would be done by splitting each study subject into several observations, one for each area of residence. For example, if a person is born at time 0 in area A, moves to area B at time 5, and is diagnosed with cancer at time 8, two observations would be made. One with a length of 5 (5 − 0) in area A, and one with a length of 3 (8 − 5) in area B. * v * t * e (en) |
| dbo:wikiPageID | 10726317 (xsd:integer) |
| dbo:wikiPageLength | 1007 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 723297560 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Covariate dbr:Statistical_model dbr:Statistics dbc:Survival_analysis dbr:Survival_analysis |
| dbp:wikiPageUsesTemplate | dbt:Unreferenced dbt:Statistics-stub |
| dct:subject | dbc:Survival_analysis |
| gold:hypernym | dbr:Term |
| rdfs:comment | A time-varying covariate (also called time-dependent covariate) is a term used in statistics, particularly in survival analyses. It reflects the phenomenon that a covariate is not necessarily constant through the whole study. For instance, if one wishes to examine the link between area of residence and cancer, this would be complicated by the fact that study subjects move from one area to another. The area of residency could then be introduced in the statistical model as a time-varying covariate. In survival analysis, this would be done by splitting each study subject into several observations, one for each area of residence. For example, if a person is born at time 0 in area A, moves to area B at time 5, and is diagnosed with cancer at time 8, two observations would be made. One with a le (en) |
| rdfs:label | Time-varying covariate (en) |
| owl:sameAs | freebase:Time-varying covariate wikidata:Time-varying covariate https://global.dbpedia.org/id/fhHS |
| prov:wasDerivedFrom | wikipedia-en:Time-varying_covariate?oldid=723297560&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Time-varying_covariate |
| is dbo:wikiPageRedirects of | dbr:Time-dependent_covariates dbr:Time-varying_covariates dbr:Time_varying_covariate |
| is dbo:wikiPageWikiLink of | dbr:Crossover_study dbr:List_of_statistics_articles dbr:Proportional_hazards_model dbr:Time-dependent_covariates dbr:Time-varying_covariates dbr:Time_varying_covariate |
| is foaf:primaryTopic of | wikipedia-en:Time-varying_covariate |