The book contains the following features: 

Simple Text The book is written in a very simple and easy-to-understand manner. The information given in the book is relevant to the need of any junior and early stage researcher. The information is presented in a schematic pattern. This is necessary because a learner must understand the pre-requisite information before understanding the more advanced concepts in basic epidemiology and biostatistics. Thus, all the information have been presented in a schematic and synchronized way so that the reader could grasp them very easily. Pictorial and Tabular Display of Information Different learners have different learning styles. Some find textual information easy to understand, while others are more at ease of understanding the pictorial and tabular display of information. Thus, all relevant texts have also been presented in a pictorial and tabular form. We hope that a large number of readers could grasp the important and useful information by having a good look at the pictures and tables. Relevant Examples We have used multiple clinical and nonclinical examples so that the reader will understand the basic concepts of epidemiology and biostatistics. Simple interesting examples have also been used for the purpose. Software Relevant to Use in Research There are a number of softwares relevant to be used for research purpose. In this book, multiple softwares have been used to compute sample size. The reader will surely find the book useful to have the understanding of how to use the relevant software for sample size calculation.