WORK ON SURVIVAL ANALYSIS OF PATIENT SUFFERED WITH DIABETES DISEASES

Student: Muhammad Abdulsalam Idriss
Supervisor: Prof Babagana Modu
HOD: Dr Musa Chiwa Dala
Department of Statistics
Faculty Of Science
Yobe State University, Damaturu, Yobe State

Abstract

1.0 Background of the Study Diabetes mellitus is a widespread chronic disease with a substantial impact on global health. According to the International Diabetes Federation (IDF), approximately 463 million adults were living with diabetes in 2019, and this number is projected to rise to 700 million by 2045 if current trends continue. The disease not only imposes a significant burden on individuals and their families but also places a strain on healthcare systems and economies worldwide. Several studies have employed survival analysis to explore risk factors and outcomes in diabetes patients. In this project an investigation to identify various factors contributing to the progression of the disease and its complications will be studied. Traditional risk factors such as age, gender, obesity, and duration of diabetes have consistently been associated with adverse outcomes. However, there is a growing recognition that additional factors, including socioeconomic status, comorbidities, lifestyle behaviors, and treatment adherence, also play significant roles in diabetes prognosis. By delving into survival analysis to examine these factors comprehensively, will be gained a deeper understanding of the multifaceted nature of diabetes and its associated risks. Such knowledge can inform the development of targeted interventions to prevent or delay complications, improve patient education and self-management strategies, and optimize treatment approaches. Furthermore, survival analysis allows for the estimation of survival probabilities, hazard ratios, and other measures that aid in risk stratification and individualized patient care. Given the increasing prevalence of diabetes and its significant impact on individuals and society, there is a critical need to advance understanding of the risk factors and outcomes in diabetes patients using survival analysis. This project aims to contribute to the existing body of knowledge by investigating these factors in a comprehensive dataset of diabetes patients. By uncovering the relationships between risk factors and patient outcomes, this research can provide valuable insights that informed decision particularly to clinical practice, policy development, and public health initiatives aimed at reducing the burden of diabetes and improving the lives of individuals living with the disease. 1.2 Statement of the problem Despite significant advancements in the understanding and management of diabetes mellitus, the disease continues to pose substantial challenges to individuals, healthcare systems, and society as a whole. The development of complications in diabetes patients significantly impacts their quality of life and increases the risk of disability and premature death. Therefore, there is a pressing need to explore the risk factors associated with diabetes and their impact on patient outcomes using survival analysis techniques. 1.3 Aim and objectives of the study The primary aim of this study is to explore the risk factors associated with diabetes and examine their impact on patient outcomes using survival analysis techniques. To achieve this aim, the study will focus on the following objectives:  Identify and analyze risk factors.  Investigate the relationship between risk factors and outcomes.  Inform personalized interventions and treatment strategies.  Contribute to evidence-based practice and policy. 1.3 Purpose of the Study The primary purpose of this study is to explore the risk factors associated with diabetes and examine their impact on patient outcomes using survival analysis techniques. Furthermore, this study will benefit individuals and decision maker in identify the desease and factors, asses patient outcomes and improve patient well trip. 1.5 Research Questions This project is designed to answer the following questions:  What are the risk factors associated with diabetes and its complications?  How do identified risk factors impact the occurrence of complications in diabetes patients?  What is the relationship between risk factors and survival probabilities in diabetes patients? 1.6 Research Hypotheses Following the three research question, the research hypothesis listed below will be use to guide the investigation.  There is a significant association between traditional risk factors (age, gender, body mass index) and the occurrence of complications in diabetes patients.  Additional factors, such as socioeconomic status, comorbidities, lifestyle behaviors, and treatment adherence, have a significant impact on diabetes outcomes, independently of traditional risk factors.  The survival probabilities of diabetes patients differ based on the presence of identified risk factors. 1.7 Definition of terms To provide clarity and understanding of this project, the key term listed below are defined Diabetes mellitus is a chronic metabolic disorder characterized by elevated blood glucose levels due to insufficient insulin production (Type 1 diabetes) or impaired insulin action (Type 2 diabetes). Risk factors are characteristics or variables that increase the likelihood of developing a certain condition or experiencing adverse outcomes. In the context of this study, risk factors refer to factors associated with the development and progression of diabetes and its complications. Survival analysis is a statistical method used to analyze time-to-event data, where the event of interest can be the occurrence of complications, death, or any other defined outcome. It incorporates censoring information to account for individuals who have not experienced the event by the end of the study period. Complications in the context of diabetes refer to adverse health conditions or problems that arise as a result of poorly controlled blood glucose levels over time. These complications can affect various organ systems, such as the cardiovascular system, kidneys, nerves, and eyes. Prognosis refers to the likely course and outcome of a disease or condition. In the context of diabetes, prognosis refers to the predicted or expected outcomes, including the likelihood of developing complications and survival probabilities. Hazard ratios are a measure of the relative risk or likelihood of an event occurring in one group compared to another. In survival analysis, hazard ratios estimate the ratio of the hazard rates (rates of occurrence of the event of interest) between different groups or for different risk factors. Cox Proportional Hazards Model Cox proportional hazards model is a widely used statistical model in survival analysis. It allows for the assessment of the relationship between risk factors and the hazard rate while adjusting for other covariates. It provides estimates of hazard ratios and can account for censoring in the data. Parametric survival models are a class of survival analysis models that make assumptions about the distribution of survival times. These models estimate the parameters of a chosen distribution (e.g., exponential, Weibull, or log-normal) to describe the survival probabilities and hazard rates.

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