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.
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Showing 1 to 15 of 15 for “"Kaplan-Meier survival analysis"”.
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Survival analysis of the modernized retirement system for the United States Marine Corps
… system and the Modernized Retirement System. The analysis utilizes Kaplan-Meier survival analysis for expected lengths of service and probit regression models to evaluate various retirement choices under the Modernized Retirement System. The results of the analysis indicate the U.S. Marine Corps …
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Inter-alpha-trypsin inhibitor heavy chain H4 as a diagnostic and prognostic indicator in patients with hepatitis B virus-associated hepatocellular carcinoma
… ITIH4 levels were determined by western blot analysis and expressed in densitometry units (DU). RESULTS: ITIH4 levels were higher in CHB (mean: 252.96 DU) and liver cirrhosis (mean: 206.43 DU) patients than in healthy controls (mean: 75.92 DU) and HCC patients (mean: 92.86 DU) (P <0.001). The …
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Outcomes of penetrating keratoplasty at a tertiary institution in South Africa.
Aims: To determine corneal graft survival rates and visual outcomes of penetrating keratoplasty (PKP) in a South African setting. Methods: A retrospective review of 99 penetrating keratoplasties performed at Groote Schuur Hospital, South Africa over a 3-year period between February 2016 and …
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Effects of Attention Allocation on Habituation to Food Cues in Normal Weight and Overweight Children
… and analyzed using repeated measures ANCOVA and Kaplan-Meier survival analysis. The rate of change in salivation over trials differed significantly by weight status: p = .01) but not by distracter task condition: p > .10). Specifically, regardless of distracter task condition, at the final trial …
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The Risk of Seizure Recurrence Following a First Unprovoked Seizure in Childhood: An Extended Follow-Up
… 24 hours, and type of seizure) were analyzed by Kaplan-Meier survival analysis and Cox's proportional hazard model. RESULTS: 177 children(43.3%) experienced seizure recurrence. The cumulative risk of recurrence was 28.5%, 38.6%, 46.3%, 51.5%, 53.6% at 6 months, 1, 2, 5, and 8 respectively. The …
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IMPACT OF SARS-COV-2 RESPIRATORY INFECTION ON CLINICAL OUTCOMES AND NEED FOR NON-INVASIVE VENTILATORY SUPPORT IN ACUTE EXACERBATIONS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE: A SINGLE-CENTER, PROSPECTIVE, OBSERVATIONAL STUDY
… – 0.84). This result combined with blood gas analysis values reflected a predominant hypoxemic ARF among SARS-CoV-2, differently from hypercapnic ARF in the control group. A significantly higher mortality rate was detected among SARS-CoV-2 patients at Kaplan-Meier survival analysis (1 year …
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Long-term patency of nitinol stent placement in dysfunctional hemodialysis
… shunt after failed balloon angioplasty and analysis the factors affecting the patency of nitinol stent. Materials and methods: Eighty-three patients with dysfunctional dialysis shunts underwent bail-out stenting to restore vascular access. The indications included 1) residual stenosis more …
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Candidate tumour markers and potential therapeutic targets in colorectal cancer.
… cancer progression within the follow-up period. Kaplan-Meier survival analysis, conducted on 110 early (A and B) stage patients, found those who were positive for any marker had significantly shorter disease-free survival than patients who were negative (P=0.026) and patients who were positive …
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Tuberculosis and hospitalization incidence postpartum among women living with HIV in Gugulethu, Western Cape, South Africa
… cohort study and phase 3 is a randomized trial. Kaplan-Meier survival analysis was used to assess the incidence of TB and hospitalization over time among ix WLHIV up to four years postpartum and Cox regression was used to measure the effect of risk factors on the incidence of TB and …
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The effectiveness of a care transitions and rapid response nurse intervention at reducing readmissions and emergency department use for high risk patients: a mixed methods study
… evaluate the effectiveness of the intervention. Analysis was completed using the intention-to-treat principle. The primary end-point - the time to first readmission - was analyzed using the Kaplan-Meier survival analysis. The Fisher’s exact test compared differences in the post-discharge period, …
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Factors associated with mortality among Tuberculosis patients on treatment in Limpopo Province, South Africa, from 2013 to 2018
… and Statistics and Data version 12 were used for analysis. As part of the descriptive statistics, the Chi square test (χ2) was used to establish the association between other variables and the main outcome - death. Summary tables described the variables in terms of their frequency and univariate, …
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Fast-track programs in total hip and knee replacement at Swedish hospitals - influences on safety, outcome and patients' experiences
… TKR operations by using multivariable regression analysis with adjustments. The PROs for TKR also included the knee-specific instrument KOOS. In the third observational register study the 2-year risk of revision and mortality within the different care programs was compared by using Kaplan-Meier …
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Krankheitsverlauf der infantilen spinalen Muskelatrophie Typ I : Implikationen für zukünftige Therapiestudien und die genetische Beratung
… may modify the disease course and affect the survival of the patients. This was done with the intention to define a historical control group for future clinical trials. Those patients were eligible who were diagnosed between 2000 and 2005 and whose diagnosis of SMA had been confirmed …
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Effect of fenbendazole on shedding and embryonation of Ascaris suum eggs in naturally infected gestating sows
… sample. Time-to-negative was evaluated using Kaplan-Meier survival analysis with Log-Rank test and censoring of animals that reached the end of the study period still shedding. Percent negative at the end of the experiment was evaluated by Chi-square analysis using Fisher's exact test. …
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Genetic analysis of squamous cell carcinoma of the head and neck
… over the past few decades the overall survival rate for patients with HNSCC has changed little. Currently, the management of HNSCC patients is based on the assessment of a variety of clinical and pathological parameters. However, in many instances, these factors fail to accurately …