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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1988 3
1989 45
1990 152
1991 216
1992 355
1993 460
1994 614
1995 623
1996 713
1997 812
1998 893
1999 961
2000 1256
2001 1353
2002 1423
2003 1707
2004 1830
2005 1993
2006 2247
2007 2670
2008 3094
2009 3708
2010 4243
2011 4951
2012 6104
2013 6664
2014 6602
2015 7389
2016 8326
2017 8082
2018 5819
2019 2382
2020 47
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76,412 results
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Page 1
Time-dependent covariates in the Cox proportional-hazards regression model.
Fisher LD and Lin DY. Annu Rev Public Health 1999 - Review. PMID 10352854
The Cox proportional-hazards regression model has achieved widespread use in the analysis of time-to-event data with censoring and covariates. ...The form of a time-dependent covariate is much more complex than in Cox models with fixed (non-time-dependent) covariates. It involves constructing a function of time. ...
The Cox proportional-hazards regression model has achieved widespread use in the analysis of time-to-event data with censoring …
Survival analysis and regression models.
George B, et al. J Nucl Cardiol 2014 - Review. PMID 24810431 Free PMC article.
If it is desired to test continuous predictors or to test multiple covariates at once, survival regression models such as the Cox model or the accelerated failure time model (AFT) should be used. The choice of model should depend on whether or not the assumption of the model (proportional hazards for the Cox model, a parametric distribution of the event times for the AFT model) is met. ...
If it is desired to test continuous predictors or to test multiple covariates at once, survival regression models such as the Cox mod …
Sample-size calculations for the Cox proportional hazards regression model with nonbinary covariates.
Hsieh FY and Lavori PW. Control Clin Trials 2000. PMID 11146149
This paper derives a formula to calculate the number of deaths required for a proportional hazards regression model with a nonbinary covariate. The method does not require assumptions about the distributions of survival time and predictor variables other than proportional hazards. ...
This paper derives a formula to calculate the number of deaths required for a proportional hazards regression model with a non …
Sequential tests for non-proportional hazards data.
Brückner M and Brannath W. Lifetime Data Anal 2017. PMID 26969674
The average hazard ratio was proposed as an alternative effect measure, which has a meaningful interpretation in the case of non-proportional hazards, and is equal to the hazard ratio, if the hazards are indeed proportional. ...The finite sample characteristics of the new method are examined in a simulation study in a proportional and a non-proportional hazards setting....
The average hazard ratio was proposed as an alternative effect measure, which has a meaningful interpretation in the case of non-proporti
Sparse estimation of Cox proportional hazards models via approximated information criteria.
Su X, et al. Biometrics 2016. PMID 26873398 Free PMC article.
We propose a new sparse estimation method for Cox (1972) proportional hazards models by optimizing an approximated information criterion. ...
We propose a new sparse estimation method for Cox (1972) proportional hazards models by optimizing an approximated info …
Hypothesis tests for stratified mark-specific proportional hazards models with missing covariates, with application to HIV vaccine efficacy trials.
Sun Y, et al. Biom J 2018. PMID 29488249 Free PMC article.
This article develops hypothesis testing procedures for the stratified mark-specific proportional hazards model with missing covariates where the baseline functions may vary with strata. The mark-specific proportional hazards model has been studied to evaluate mark-specific relative risks where the mark is the genetic distance of an infecting HIV sequence to an HIV sequence represented inside the vaccine. ...
This article develops hypothesis testing procedures for the stratified mark-specific proportional hazards model with missing c …
Investigation of the freely available easy-to-use software 'EZR' for medical statistics
Kanda Y. Bone Marrow Transplant 2013. PMID 23208313 Free PMC article.
Although there are many commercially available statistical software packages, only a few implement a competing risk analysis or a proportional hazards regression model with time-dependent covariates, which are necessary in studies on hematopoietic SCT. ...
Although there are many commercially available statistical software packages, only a few implement a competing risk analysis or a proport
Proportional hazards model with a change point for clustered event data.
Deng Y, et al. Biometrics 2017. PMID 28257142 Free PMC article.
In this work, we propose a change-point proportional hazards model for clustered event data. The model incorporates the unknown threshold of a continuous variable as a change point in the regression. ...
In this work, we propose a change-point proportional hazards model for clustered event data. The model incorporates the unknow …
Penalized partial likelihood inference of proportional hazards latent trait models.
Kang HA. Br J Math Stat Psychol 2017. PMID 27958648
The Cox proportional hazards model with a latent trait variable (Ranger & Ortner, 2012, Br. J. Math. Stat. Psychol., 65, 334) has shown promise in accounting for the dependency of response times from the same examinee. ...The potential of the proposed method is corroborated by a series of simulation studies for fitting the proportional hazards latent trait model to psychological and educational testing data. ...
The Cox proportional hazards model with a latent trait variable (Ranger & Ortner, 2012, Br. J. Math. Stat. Psychol., 65, 3 …
Shared and unshared exposure measurement error in occupational cohort studies and their effects on statistical inference in proportional hazards models.
Hoffmann S, et al. PLoS One 2018. PMID 29408862 Free PMC article.
We conduct a simulation study based on exposure data of the French cohort of uranium miners to compare the effects of shared and unshared exposure uncertainty on risk estimation and on the shape of the exposure-response curve in proportional hazards models. ...
We conduct a simulation study based on exposure data of the French cohort of uranium miners to compare the effects of shared and unshared ex …
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