Results 51 to 60 of about 1,821,882 (341)
Adjusting for bias introduced by instrumental variable estimation in the Cox proportional hazards model. [PDF]
Biostatistics, 2017 Instrumental variable (IV) methods are widely used for estimating average treatment effects in the presence of unmeasured confounders. However, the capability of existing IV procedures, and most notably the two-stage residual inclusion (2SRI) algorithm ...
P. Martínez-Camblor +4 more
semanticscholar +1 more source
Flexible Boosting of Accelerated Failure Time Models [PDF]
, 2008 When boosting algorithms are used for building survival models from high-dimensional data, it is common to fit a Cox proportional hazards model or to apply semiparametric least squares techniques.
Torsten Hothorn +5 more
core +1 more source
Biometrics, 2019 The Cox model—which remains the first choice for analyzing time‐to‐event data, even for large data sets—relies on the proportional hazards (PH) assumption.
Yishu Xue +3 more
semanticscholar +1 more source
Proportional Hazards Regression for Cancer Studies [PDF]
Biometrics, 2008 Summary. There has been some recent work in the statistical literature for modeling the relationship between the size of cancers and probability of detecting metastasis, i.e., aggressive disease. Methods for assessing covariate effects in these studies are limited.
openaire +3 more sources
Reliability Engineering & System Safety, 2017 This paper develops a condition-based maintenance (CBM) policy for systems subject to aging and cumulative damage. The cumulative damage is modeled by a continuous degradation process.
Bin Liu +4 more
semanticscholar +1 more source
Competing risk models to estimate the excess mortality and the first recurrent-event hazards [PDF]
, 2011 Background In medical research, one common competing risks situation is the study of different types of events, such as disease recurrence and death. We focused on that situation but considered death under two aspects: "expected death" and "excess death",
Belot Aurélien +14 more
core +1 more source
European Journal of Radiology OpenObjectives: To develop and validate a prediction model based on brain MRI features to predict disease-free survival (DFS) and overall survival (OS) for patients with intracranial extraventricular ependymoma (IEE). Methods: The study included 114 patients
Liyan Li +7 more
doaj +1 more source
Testing for Proportional Hazards with Unrestricted Univariate Unobserved Heterogeneity [PDF]
, 2009 We develop tests of the proportional hazards assumption, with respect to a continuous covariate, in the presence of unobserved heterogeneity with unknown distribution at the individual observation level.
Bhattacharjee, Arnab +1 more
core
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background 131I‐metaiodobenzylguanidine (131I‐MIBG) radiotherapy is a key treatment for relapsed and refractory (R/R) neuroblastoma (NB). Patients with R/R disease treated in the modern era are increasingly exposed to anti‐GD2 immunotherapy, which exerts selective pressure and may modify both tumor cell state and microenvironment.
Benjamin J. Lerman +7 more
wiley +1 more source