New in the Third Edition:

• Updated case studies throughout the book demonstrate the real world application of epidemiologic concepts that students can apply in subsequent coursework or in employment settings.
  
  
• Coverage of contemporary and historical underpinnings of the field, such as: anthrax, bioterrorism, the SARS epidemic, the work of William Farr, and landmark achievements in epidemiology.
  
  
• A completely new chapter on Cohort Study Designs, providing in-depth coverage of life table methods, examples of major cohort studies, and a table that compares observational study designs.
  
  
• Increased attention to diverse populations and sub-populations to reflect the growing diversity of the American society and to help reduce disparities among these groups.
  
  
• A glossary of terms that allows students quick access to major terms used in the field.
  
  
• An added appendix that provides a guide to the critical appraisal of an epidemiologic/public health research article.
  
  
• Coverage of specific content areas for applications of epidemiology, including a separate chapter on environmental health, molecular and genetic epidemiology, and psychosocial epidemiology.