In the second part of the Medical Affairs Certificate Course for Beginners, you will gain a solid understanding of the scientific foundations of clinical trials, how to analyze their results, and how to evaluate the quality of research articles. This will enhance your ability to make informed decisions based on accurate and reliable data. The course begins by explaining what a clinical trial is, highlighting the importance of internal and external validity, and discussing how bias and variability can affect the outcomes of medical studies. It also explores strategies for controlling bias and reducing variability to ensure more precise results while reviewing different study designs, such as experimental studies and types of endpoints used in clinical research. Next, you will learn how to use correlation measures in analyzing medical data, including risk ratio, odds ratio, and statistical significance. This section also covers the concept of confidence intervals and provides practical exercises to strengthen your understanding of these essential concepts, alongside a review of key medical terms commonly used in clinical research. After that, we will focus on analyzing clinical articles, where you will learn how to evaluate them using only the abstract and identify the fundamental elements of clinical research, such as inclusion and exclusion criteria, results, and endpoints. Additionally, we will introduce effective techniques for presenting and organizing clinical research articles clearly and professionally. By the end of this course, you will be able to understand, analyze, and present clinical research with precision and professionalism.