{"doi":"10.14706/jecoss11324","title":"Cox Regression Models with Time-Varying Covariates Applied to Survival Success of Young Firms","abstract":null,"journal":"Journal of Economic and Social Studies","year":2013,"id":588522,"datarank":0.48461029514283466,"base_score":2.0794415416798357,"endowment":2.0794415416798357,"self_citation_contribution":0.31191623125197543,"citation_network_contribution":0.17269406389085923,"self_endowment_contribution":0.31191623125197543,"citer_contribution":0.17269406389085923,"corpus_percentile":null,"corpus_rank":null,"citation_count":7,"citer_count":7,"citers_with_citation_signal":6,"citers_with_endowment":6,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1505611,"name":"Murat Karaoz","orcid":null,"position":1,"is_corresponding":false},{"id":1505610,"name":"Aygul Anavatan","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Cox Regression Models with Time-Varying Covariates Applied to Survival Success of Young Firms","abstract":"The most widely used model in multivariate analysis of survival
\\ndata is proportional hazards model proposed by Cox. While it is easy
\\nto get and interpret the results of the model, the basic assumption of
\\nproportional hazards model is that independent variables assumed
\\nto remain constant throughout the observation period. Model can
\\ngive biased results in cases which this assumption is violated. One
\\nof the methods used modelling the hazard ratio in the cases that the
\\nproportional hazard assumption is not met is to add a time-dependent
\\nvariable showing the interaction between the predictor variable and
\\na parametric function of time. In this study, we investigate the factors
\\nthat affect the survival time of the firms and the time dependence of
\\nthese factors using ox regression considering time-varying variables.
\\nThe firm data comes from Business Development Centers (İŞGEM)
\\nwhich is a prominent business incubation center operating in Turkey.","is_dataset_classified":null,"base_score":2.0794415416798357,"endowment":2.0794415416798357,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"26657633","pmcid":null,"openalex_id":"https://openalex.org/W2110000819","authors":[],"funders":[],"total_grants":0,"fwci":2.3737,"citation_percentile":0.92724589,"influential_citations":2,"citation_trend":[{"year":2013,"count":1},{"year":2014,"count":1},{"year":2018,"count":1},{"year":2019,"count":1},{"year":2024,"count":3}],"oa_status":"green","license":"other-oa","oa_locations":[{"url":"http://hdl.handle.net/11499/3685","host_type":"repository"},{"url":"https://gcris.pau.edu.tr/bitstream/11499/3685/1/Anavatan%20%26%20Kara%c3%b6z%282013%29.pdf","host_type":"GREEN"},{"url":"http://hdl.handle.net/11499/3685","host_type":"repository"},{"url":"http://eprints.ibu.edu.ba/2386/1/4.%20Anavatan%2C%20Karaoz.pdf","host_type":"publisher"},{"url":"https://doi.org/10.14706/jecoss11324","host_type":"journal"}],"fields_of_study":["Firm Innovation and Growth","Statistical Methods and Inference","Financial Distress and Bankruptcy Prediction","Economics","Business"],"mesh_terms":[],"keywords":["Covariate","Proportional hazards model","Regression analysis","Econometrics","Regression","Statistics","Survival analysis","Mathematics","Computer science"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-21T10:46:24.342150Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}