NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 100 for “"cox regression"”.

  1. Confidence bands for survival curves using model assisted cox regression

    Mondal, Shoubhik

    … random censorship models (SRCMs) to Cox regression, which produces reliable and more informative SCBs. SRCMs derive their rationale from their ability to utilize parametric ideas within the random censorship environment. Incorporating SRCMs into the existing framework produces more …

    njit Repository record

  2. Risk prediction models for hip fracture: parametric versus Cox regression

    Loo, Geok Yan2013

    … model for incident hip fracture using Weibull regression and compare this with Cox regression model. Method: The Study of Osteoporosis prospectively collected risk factors were used to build a risk prediction model for first hip fracture using Threshold regression with Wiener process. Similar …

    maryland Repository record

  3. Sind Parameter der Glykämiekontrolle mit zukünftigen Mikroangiopathien, Mortalität und kardiovaskulären Ereignissen assoziiert?

    Mai, ArthurTechnische Universität Dresden

    … Die Ergebnisse zeigen in einer univariaten Cox-Regression in der Gesamtkohorte eine Signifikanz (p < 0.001) der glukosebezogenen Parameter interstitielle Glukosefluktuation, HbA1c und Diabetesdauer auf die Ausprägung von kardiovaskulären Endpunkten. In einer multivariaten Cox-Regression mit …

    qucosa-diss

  4. Effects of diabetes mellitus on virologic and immunologic outcomes of patients on first line antiretroviral therapy in a military population in South Africa

    2018

    … a 12-month period was examined using Poisson and Cox regression models. xvi Results: Amongst 1380 patients, 47 indicated HIV and DM while 1333 indicated HIV but were Non-DM. The study sample was predominantly male, with the majority from a rural area with varying educational levels, ranging from …

    pretoria Repository record

  5. Blood Pressure Variability and Ambulatory Arterial Stiffness Index in Predicting Major Adverse Cardiovascular Events

    Hein, AungBournemouth University2025

    … data. Univariate and multivariate logistic regression with odds ratios (OR) and 95% confidence intervals (CI) were used to assess the relationship between BPV, AASI and MACE. Multivariate Cox regression analysis with hazard ratio (HR) and (95% CI) and Kaplan-Meier analyses were conducted for …

    bournemouth Repository record

  6. Adoption of Electronic Health Records by Admitting Physicians: A Heuristic Model

    Hudson, John Sharon2019

    … over 80% of the total admissions. Logistic Regression and Cox Regression were used to evaluate how well variables predicted adoption (80% utilization) and adoption rate.</p> <p><em>Results:</em> The Logistic Regression model predicted significant proportions of variation in adoption of CPOE …

    odu Repository record

  7. Sleep Disorders and Kidney Transplant Outcomes: Findings From an 18-Year (1997-2015) Historical Cohort Study

    Lubas, Margaret M.2017

    … of any sleep disorder to survival time. Cox regression models, examined the adjusted relationship of any sleep disorder to the outcomes, graft survival time and patient survival time after graft failure. Sub-analyses also examined associations between sleep-disordered breathing disorders …

    odu Repository record

  8. Sparse selection in Cox models with functional predictors

    Zhang, Yulei2012

    This thesis investigates sparse selection in the Cox regression models with functional predictors. Interest in sparse selection with functional predictors (Lindquist and McKeague, 2009; McKeague and Sen, 2010) can arise in biomedical studies. A functional predictor is a predictor with a trajectory …

    columbia-diss Repository record

  9. Έκφραση των κλωντινών-1,4,5,7 και αποφραξίνης σε ασθενείς με ηπατοκυτταρικό καρκίνωμα και συσχέτιση αυτών με κλινικοπαθολογοανατομικούς παράγοντες και με την επιβίωση των ασθενών

    Μπουχάγιερ, Κωνσταντίνος2016

    … ολική επιβίωση σε μήνες, στην μονοπαραγοντική cox regression ανάλυση (p=0.049) και στην Kaplan Meier ανάλυση(p=0.04). Η πολυπαραγοντική cox regression ανάλυση έδειξε ότι τα επίπεδα της κλωντίνης-4 αποτελούν ανεξάρτητο παράγοντα που σχετίζεται με την ολική επιβίωση (p=0.01). Eπίσης, τα …

    patras-thes Repository record

  10. Predictors of Developmental Screenings for Young Children

    Ranne, Janice Chandler2019

    … data.</p> <p>Multivariate analysis by Cox regression is used to determine whether predictor variables from any of the four conceptual areas of the framework explain young children's receipt of formal or informal screenings. Cox regression is also used to examine the magnitude of …

    odu Repository record

  11. Modelling hepatotoxicity in HIV/TB co-infected patients: extensions of the Cox Proportional Hazards Model

    Mlotshwa, Vintia PhilileDepartment of Statistical Sciences2020

    … The statistical objectives are to fit a Cox regression model, the resolution model of hepatotoxicity, and the extended Cox models for recurring events, including the Andersen Gill (AG) model, the Shared frailty model, the Prentice, Williams and Peterson (PWP) total time (TT) model, the …

    cape-town Repository record

  12. The Impact of Increased Number of Acute Care Beds to Reduce Emergency Room Wait Time

    McKay, JenniferUniversité d'Ottawa / University of Ottawa2015

    … ED wait times. We derived a multivariable Cox regression model to examine this association. We found no significant association between ED boarding times and the time to discharge. Using a Markov model, we estimated an increased annual operating cost of $2.1m to meet the prescribed wait …

    ottawa-retro Repository record

  13. Detection of Novel Genomic Markers for Predicting Prognosis in Hepatocellular Carcinoma Patients by Integrative Analysis of Copy Number Aberrations and Gene Expression Profiles: Results from a Long-Term Follow-Up

    조, 효정2016

    … were retrieved by integrative analysis. Results Cox regression analysis indicated that the CNAs in 192 genomic regions were significantly associated with OS (P<0.05). Integrative analysis capturing concordant results demonstrated that the low expression of TLE4 (P=0.041) and XPA (P=0.006) were …

    ajou Repository record

  14. Treatment outcomes of Her-2 positive Breast Cancer in the absence of Her-2 targeting agents at Groote Schuur Hospital, Cape Town, South Africa. Are we doing enough?

    Sirkhotte, AqeelaDivision of Radiology2024

    … analysis. A multivariate analysis using the Cox regression model and log rank testing was used to determine any association between OS or RFS and age, hormone receptors, or clinical stage. A p-value of <0.05 was used to determine statistical significance. Results: The cumulative OS and RFS at …

    cape-town Repository record

  15. Investigation of Gender and Race Effects on Promotion in Departments of Geography in the United States

    Pickett, Jackson B.Texas State University2015

    … these matched cohorts was years until promotion. Cox regression was used as it is designed to analyze survival data and can incorporate multiple variables. Even corrected for publications and other variables, the gender and white race coefficients were significant and demonstrated that the rate of …

    texas-state Repository record

  16. Government Funding and Failure in Nonprofit Organizations

    Vance, Danielle L.2011

    … chose to use survival analysis and employed the Cox regression technique. Here, I analyzed the NCCS-Guidestar National Nonprofit Research Database, which archives nonprofit IRS filings from 1998 to 2003. This data set is noteworthy for its level of detail and its comprehensive nature. I found …

    iupui Repository record

  17. Pretreatment Serum CYFRA 21-1 Level Correlates Significantly with Survival of Cervical Cancer Patients: A Multivariate Analysis of 506 Cases

    박, 선령2016

    … in these patients. A multivariate analysis using Cox’s proportional hazard model was performed to evaluate the prognostic significance of pretreatment variables. In patients who underwent radical hysterectomy, there was a significant correlation between pretreatment serum SCC-Ag/CYFRA 21-1 levels …

    ajou Repository record

  18. Court -ordered cognitive -behavioural group treatment with adolescent offenders: Outcomes of an anger management program

    Bartholoma, ChristineUniversity of Windsor2009

    … GLM multivariate analyses, logistic regressions, and Cox Regression Survival analyses permitted the exploration of the role of juvenile characteristics in intervention outcome and the examination of treatment effects on recidivism. Juvenile offender gender, ethnicity, socioeconomic …

    windsor Repository record

  19. Differential Sensitivity of Intraindividual Variability Dispersion and Global Cognition in the Prediction of Functional Outcomes and Premature Mortality in Precariously Housed and Homeless Adults

    Blumberg, Michelle2023

    … and hospital records (N = 103 deaths). Linear regressions were used to predict current and long-term social and physical functioning from IIV dispersion. Cox regression models were used to examine the relation between IIV dispersion and mortality. Covariates included global cognition, age, and …

    york Repository record

  20. The Relation of Weight Loss and Improved Fitness to Survival in Healthy Males

    Bokovoy, Joanna Lynn

    … in weight loss studies.</p> <p>This study used Cox Regression analysis to address the separate and combined association of weight loss and improved fitness to all-cause mortality. A two-visit, apparently healthy, initially low fit, overweight male subset (n = 1,616), age 20 to 65 years, from the …

    loma-linda Repository record

Page 1 of 5