Epidemiology of Cancer
Epidemiology is the study of factors that affect cancer, and it focuses on identifying likely patterns and causes. The concept of principle period predisposition holds that early diagnosis could falsely inflate a cancer's chances of survival while only slightly improving the infection's typical course.
When determining the cause of a tumour and identifying and developing improved drugs to improve the disease's usual course, epidemiological techniques are used in the investigation of malignancy. Long-term predisposition is the idea that screening tests will likely study slower-growing, more slothful cancers, but improvements in diagnosing more cases of slow disease may not translate into better patient outcomes following the implementation of screening programmes.