Breast cancer is the second leading cause of cancer deaths among women. The development of breast cancer is a multi-step process involving multiple cell types, and its prevention remains challenging in the world. Early diagnosis of breast cancer is one of the best approaches to prevent this disease. In some developed countries, the 5-year relative survival rate of breast cancer patients is above 80% due to early prevention. In the recent decade, great progress has been made in the understanding of breast cancer as well as in the development of preventative methods. A study to assess the effectiveness of information booklet on early detection of breast cancer in terms of knowledge among women attending out-patient department in a selected hospital at erode.

Methodology: Research Approach: Quantitative evaluative approach

Research Design: Quasi experimental Non-equivalent control group pre-test and post-test design.

Independent variables: Information Booklet on early detection of breast cancer.

Dependent variables: Level of knowledge on early detection of breast cancer.

Sampling Technique: In this study, the researcher selected the samples using non-probability, purposive sampling technique. Sample Size: In this study the sample size was 60 among which 30 samples in control group and 30 samples in the experimental group.