The aim of the study was to examine the effect of counselling and follow-up after education on the risks and prevention methods of breast cancer on early diagnosis behaviours and healthy lifestyle behaviours. The population of the study will consist of female administrative staff working at Mersin University. The sample of the study will consist of 160 people. A total of 160 personnel determined by randomisation will be divided into group A (study) and group B (control) formed by the independent researcher in the computer environment. All participants will be given a one-hour training on breast cancer and will be practised with a model as well as a presentation. Group A will be counselled for 6 months after the training and a reminder message will be sent via SMS on Monday every week as "Check your modifiable risk factors for breast cancer" and their feedback will be received. In group B, no additional application will be made except for the training. The data of the study will be collected before and 6 months after the training by using the Descriptive Characteristics Form, Breast Cancer Early Diagnosis Behaviours Form, Counselling Form and Healthy Lifestyle Behaviours Scale II. The data obtained from the study will be analysed in a computer environment. Number, percentage, mean and standard deviation will be used as descriptive statistics in the evaluation of the data.

The study was a prospective, parallel, two-arm (1:1), randomised controlled experimental study. The aim of the study was to examine the effect of counselling and follow-up after education on the risks and prevention methods of breast cancer on early diagnosis behaviours and healthy lifestyle behaviours. The population of the study will consist of female administrative staff working at Mersin University. The sample of the study will consist of 160 people with an effect size of 0.23, 80% power maximum 5% type 1 error and drop out rate of 10%. The sample determined by randomisation A total of 160 personnel in the group will be divided into group A (study) and group B (control) formed by the independent researcher in the computer environment. All participants will be given one-hour training on breast cancer, modifiable and non-modifiable risk factors for breast cancer, symptoms of breast cancer, screening programmes and breast self-examination. Group A will be counselled for 6 months after the training and a reminder message will be sent via SMS on Monday every week as "Check your Changeable Risk Factors for Breast Cancer" and their feedback will be received. In group B, no additional application will be made except for the training. The data of the study will be collected before and 6 months after the training by using the Descriptive Characteristics Form, Breast Cancer Early Diagnosis Behaviours Form, Counselling Form and Healthy Lifestyle Behaviours Scale II. The data obtained from the study will be analysed in a computer environment. Number, percentage, mean and standard deviation will be used as descriptive statistics in the evaluation of the data.

Inclusion Criteria:

• 35 years and older,
• No visual impairment and no physical problems that would prevent breast self-examination,
• Not previously diagnosed with breast cancer,
• Accepted to participate in the research,
• Female administrative staff working at Mersin University

Exclusion Criteria:

• 35 and under,
• Visually impaired and have a physical problem that would prevent them from performing breast self-examination,
• Previously diagnosed with breast cancer,
• Willing did not agree to participate in the research,
• Female administrative staff not working at Mersin University

Firstly, the names of the personnel will be listed alphabetically. A number will be written opposite each personnel and the number of 160 personnel will be determined from the total number of administrative personnel with high risk level by randomisation generated by an independent researcher in the computer environment. The sequence number of the personnel determined by randomisation will be divided into group A (study) and group B (control) in the computer environment and the information showing that they are assigned to group A and B according to the randomisation table will be placed in an opaque envelope. This envelope will be kept by the coordinator researcher and when the staff is approached for training, it will be learnt which group the staff is in. Since all personnel will be trained, the personnel will be blinded. The data will be computerised by the researcher and a biostatistician independent of the research will blind the groups unknowingly