Essays about: "Cox Proportional Hazards Model"

Showing result 1 - 5 of 17 essays containing the words Cox Proportional Hazards Model.

  1. 1. Censoring Bias in Oncology Clinical Trials

    University essay from Lunds universitet/Matematisk statistik

    Author : Andrea Mattsson; [2020]
    Keywords : survival analysis; censoring; progression-free survival; Cox proportional hazards model; oncology clinical trial; HER2CLIMB; Mathematics and Statistics;

    Abstract : Time to disease progression or death (PFS) is of main interest in oncology clinical trials. The data is commonly analyzed using a Cox model. Early discontinuation gives uncertainty in the estimated hazard ratio (HR). Censoring is generally used to handle discontinuations. READ MORE

  2. 2. The performance of inverse probability of treatment weighting and propensity score matching for estimating marginal hazard ratios

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Jonatan Nåtman; [2019]
    Keywords : Monte Carlo simulations; propensity score; survival analysis; Cox model; censoring rate; sample size;

    Abstract : Propensity score methods are increasingly being used to reduce the effect of measured confounders in observational research. In medicine, censored time-to-event data is common. READ MORE

  3. 3. Differences in age at breeding between two genetically different populations of brown trout (Salmo trutta).

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Lars Sjöström; [2019]
    Keywords : Survival analysis; Biodiversity; Population genetics; Ecology; Evolutionary biology; Cox Proportional Hazards model; Complementary Log-Log Link model; Accelerated Failure-Time model;

    Abstract : Survival analysis is an effective tool for conservation studies, since it measure the risk of an event that is important for the survival of populations and preservation of biodiversity. In this thesis three different models for survival analysis are used to estimate the age at breeding between two genetically different populations of brown trout. READ MORE

  4. 4. P2P Lending - An Investor's Perspective on the Measurement of Return and Factors Impacting Default Hazards

    University essay from Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

    Author : Alfred Hedlund; Amanda Johansson; [2019]
    Keywords : P2P lending; Peer-to-Peer; IRR; Survival Analysis; Cox model;

    Abstract : The emergence of peer-to-peer (P2P) lending platforms has caught the attention of researchers. However, limited attention has been directed toward the investors. This paper aims to explore and measure the components of P2P lending returns in Sweden. READ MORE

  5. 5. Variable selection techniques for the Cox proportional hazardsmodel: A comparative study

    University essay from Göteborgs universitet/Institutionen för nationalekonomi med statistik

    Author : Simon Peterson; Klas Sehlstedt; [2018-03-08]
    Keywords : All subset selection; Backward elimination; Best subset selection; BeSS; Cox proportinal hazards model; least absolute shrinkage and selction operator; LASSO;

    Abstract : In statistics different models are used to emulate real world processes. Variable selection refers to reduction of the number of parameters in the models in order to increase interpretability and model effectiveness. READ MORE