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Showing 1 to 20 of 23 for “"Log-rank test"”.

  1. Investigating a Role for the Duchenne Muscular Dystrophy Gene in the Tumourigenesis of Head and Neck Cancer

    Jones, LeanneUniversity of Northampton2024

    … with a median survival difference of 26 months (log rank test p= 0.0083, n=526). Human papillomavirus (HPV) is one of the main biomarkers used for prognosis, where people who are HPV positive have a better outcome than those who are HPV negative. Interestingly, combined analysis in HPV positive …

    northampton Repository record

  2. The prognosis of tuberculosis in adults infected with Human Immunodeficiency Virus (HIV-1)

    Badri, Motasim Hassan YousofDepartment of Public Health and Family Medicine1999

    … picture combined with a positive smear or a histologic diagnosis. TB patients were treated with 6-month short course regimens. The Kaplan-Meier method was used to estimate the overall survival times of tuberculosis and non-tuberculosis patients. The generalized log rank test was used to compare …

    cape-town Repository record

  3. Correlação da localização topográfica e do edema peritumoral em pacientes com glioma recidivo com a resposta terapêutica ao álcool perílico

    Silva, Júlio César Thomé de SouzaNiterói2010

    … global. Análise estatística foi realizada usando testes log rank. A sobrevida global foi determinada pelo método de Kaplan-Meier, incluindo intervalos de confiança de 95%. Resultados: Pacientes do grupo controle apresentaram sobrevida reduzida (p < 0,0001) em relação ao grupo tratado com AP. …

    brazil-uff Repository record

  4. Investigation of the intrinsic mechanism of drug resistance in multiple myeloma

    Ooi, MelissaDublin City University2011

    … significantly shorter progression-free (p=0.001, log-rank test) and overall survival (p=0.002, log-rank test) compared to those with low expression levels. AMPK activation is promising as an anticancer pathway and may also be a chemoprevention target. Metformin and AICAR, which activate this …

    dcu Repository record

  5. Prognostické a prediktivní markery v léčbě karcinomu pankreatu

    Liberko, MariánUniverzita Karlova, 3. lékařská fakulta2025

    … were included in the study. Baseline clinicopathological and pretreatment baseline parameters (inflammation-based parameters, CTCs) were collected. Survival was estimated using the Kaplan-Meier method and differences in survival were evaluated using the log-rank test. Results: We identified …

    charles-prague Repository record

  6. Resolución espontánea de reflujo vesicoureteral primario en niños: factores predictores y nomograma de predicción

    Prada Rico, MayerlyUniversidad del Rosario2011

    … de reflujo a los 3 años de su diagnóstico Metodología: Incluimos 407 niños con diagnóstico de RVU primario en un periodo de 10 años. Mediante análisis de asociación y comparaciones de promedios se determinaron las variables que se comportaron como factores de riesgo para fallar en obtener …

    rosario Repository record

  7. Der femoropopliteale P1-Bypass mittels Fluoropassiv - Erfahrungen mit einem neuen alloplastischen Gefäßersatz

    Kipper, BerndUniversität Würzburg

    … infrainguinale Gefäßrekonstruktionen ist die autologe V.saphena magna. Alternativ kommen alloplastische Prothesen aus Dacron und Polytetrafluoroethylen zum Einsatz. Die vorliegende prospektive nicht-randomisierte Studie vergleicht die 5-Jahresergebnisse einer neuen fluoropolymerisierten …

    wurz-thes Repository record

  8. Genetic Variations in Interferon-Induced Genes and HCV Recurrence after Liver Transplantation

    Whitehill, Benjamin Cameron2014

    … is almost universal with 96% of patients testing positive for viral RNA and exhibiting histological evidence of infection within the first year. Type I interferons (IFN) and interferon inducible genes are responsible for the innate antiviral state and single nucleotide polymorphisms (SNPs) …

    vcu Repository record

  9. The impact of chest radiography on the diagnosis, clinical management and outcome of acute lower respiratory infections in children

    Swingler, George HenryDepartment of Public Health and Family Medicine1999

    … and control groups respectively (p=0.50, log rank test). The hazard ratio for recovery was 1.08 (95% CI 0.85 to 1.34). This lack of effect was not modified by clinicians' experience and no sub-groups of children were identified in whom the radiograph had an effect. Pneumonia was diagnosed …

    cape-town Repository record

  10. Anti-Insulin Resistance Treatments Suppress Her2+ Breast Cancer Growth Via Altering Metabolism

    CHOU, PING-CHIEH2015

    <p>Epidemiological studies have identified that type 2 diabetes mellitus (DM2) is a significant risk factor for carcinogenesis and cancer death, including breast cancer. Our previous finding in patients showed that anti-insulin resistance treatments are associated with improved HER2<sup>+</sup> …

    uthsc Repository record

  11. Breastfeeding practices among women living with HIV who started antiretroviral therapy in pregnancy in Cape Town South Africa

    Nqeto, Kanyo NalediDepartment of Public Health and Family Medicine2023

    … depression using a bivariate analysis and a log-binomial regression. We also examined factors associated with breastfeeding duration and compared this duration in women at high risk of depression and those who were at low risk, using the cox proportion hazard model, Kaplan-Meier curves and …

    cape-town Repository record

  12. Outcomes of children with biopsy-proven Langerhans cell histiocytosis (LCH) treated at the Red Cross War Memorial Children's Hospital from 1998 – 2017

    Hlatywayo, LoyceDepartment of Paediatrics and Child Health2024

    … Where two groups were compared, using the log rank test, a p value of 0.05 was regarded as significant. Results: There were 30 patients between the ages of 1 month and 12 years (median 2 years). The male to female ratio was 1:1.5. Seventeen patients (56.7%) presented with multisystem …

    cape-town Repository record

  13. Long-term patency of nitinol stent placement in dysfunctional hemodialysis

    김, 태희2012

    … of stent fracture, were compared by Kaplan-Meier log-rank test. Results: The stents were placed in 26 central veins (31.3%), 40 upper arm veins (48.2%), 11 cubital veins (13.3%), and 6 forearm veins (7.2%) with 100% technical and clinical success rates. The 3months, 6months, 1-, 2-, 3-, and 4-year …

    ajou Repository record

  14. An In-Vitro Comparison of Microleakage With E. faecalis In Teeth With Root-End Fillings of Proroot MTA and Brasseler's EndoSequence Root Repair Putty

    Brasseale, Beau J. (Beau John), 1980-2011

    … have many of the same chemical, physical, and biological properties as mineral trioxide aggregate (MTA), but with superior handling characteristics. The material is composed of calcium silicates, monobasic calcium phosphate, zirconium oxide, tantalum oxide, proprietary fillers, and thickening …

    iupui Repository record

  15. Morbidity from antiretroviral metabolic effects in Africa: The Mama Study

    Karamchand, SumanthDivision of Clinical Pharmacology2017

    … was compared with a Kaplan-Meier plot and a log-rank test. The association of efavirenz exposure with the hazard of developing diabetes was modelled using a multivariate Cox-proportional hazards model. The following variables were adjusted for in the regression model: age, sex, baseline BMI, …

    cape-town Repository record

  16. CARDIOVASCULAR CONSEQUENCES AFTER SPINAL CORD INJURY AND THE EFFECTS OF ELECTRICAL STIMULATION

    Barton, TLiverpool John Moores University2019

    … Cardiovascular disease, which encompasses pathologies of the heart and vascular tree, is one of the leading causes of morbidity and premature mortality in this population. Current clinical practice guidelines for CVD risk estimation in SCI use traditional cardiovascular risk factors and risk …

    liverpool-jm Repository record

  17. C - Reactive Protein, Coronary Heart Disease and Ischemic Stroke in the Elderly: The Cardiovascular Health Study

    Li, Xia2014

    … software was used for analyses and statistical tests included t test, ANOVA, χ2 Kaplan-Meier method, Log-rank test, and Cox proportional hazards regression. Results: CRP distribution was highly skewed toward higher values, thus necessitating the use of the median and log transformation of the …

    vcu Repository record

  18. Analysis of clustered competing risks with application to a multicentre clinical trial

    Familusi, Mary AjibolaDepartment of Statistical Sciences2016

    … in statistically modelling research. The methodological developments of time-to-event analysis that have been widely adopted are: (i) The Kaplan-Meier method, for estimating the survival function; (ii) The log-rank test, for comparing the equality of two or more survival distributions; (m) The …

    cape-town Repository record

  19. An event history analysis of socio-economic determinants of adult mortality in Namibia

    Kandjimbi, Alina2014

    … interest to better understand the epidemiology of HIV/AIDS, which has a greater impact on adults, has rejuvenated research in adult mortality. Understanding the hazard of and factors associated with adult mortality is crucial towards designing programmes and interventions aiming at …

    namibia Repository record

  20. Extending Sample Size Calculation for the Cox Proportional Hazards Model

    Wang, Songfeng1970

    … for survival times of uncured patients and a logistic distribution is used for the probability of patients being cured. As the first project of this dissertation, we develop a sample size formula based on the PH cure model by investigating the asymptotic distributions of the standard weighted …

    south-carolina Repository record

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