This study was using a quasi experimental design with one group pretest and posttest model. The sample was consisted of 122 woman from Dayak Kenyah tribe that obtained from Cluster Random Sampling and Simple Random Sampling. Data collection was carried out by distributing questionnaires to respondents. Data analysis techniques using univariate analysis and bivariate analysis using the Marginal Homogeneity test and Mc Nemar test.

The results showed that there was a significant correlation between Sadari and knowledge in the community of Dayak Kenyah Tribe (p value(0,0001) < α (0,05). There was also significant correlation between Sadari and attitude of the Dayak with p value (0,002)) < α (0,05), indicating significant differences of the Dayaks attitude and knowledge before and after health education dissemination.

It is recommended that The Dayak Kenyah need to be encouraged to implement Sadari in their daily lives and be motivated to find information about their reproductive health.

Keywords: Knowledge, Dayak tribe, Sadari, Attitude

Dayaks have a profound contact with myths, namely an event that is considered sacred, or an event experienced directly by the ancestors. Although the time of occurrence of the incident cannot be ascertained historically, but the history of the event for the Dayaks serves as the norm of life. All kinds of objects are considered to have supernatural power that can provide good or bad. Believing in talismans, in the form of objects made with certain rules, either the paper, the ink, and time of production, the techniques and the verses written in the form of numbers or certain sentences [1-5].

Non-contagious diseases, including cancer, are the main problems both in the world and in Indonesia. According to data from WHO (2013), cancer cases increased from 12.7 million in 2008 to 14.1 million cases in 2012. Meanwhile, the number of deaths increased from 7.6 million people in 2008 to 8.2 million in 2012. Cancer is the number 2 cause of death in the world by 13% after cardiovascular disease. It is estimated that in 2030 cancer cases can reach 26 million, in which 17 million of them die. This rate will be faster in poor and developing countries (Ministry of Health, 2014).

Believes in supernatural power: Mostly occur in the countryside and the city. These supernatural powers are magical and having positive or negative forces that are usually called white magic or black magic. The white is not always good, so does the black is not always evil. The source of this belief comes from the local indigenous culture, namely from Kahariangan or hills, in which there are supernatural power can be used to kill or to destroy people's lives. Parung Maya is a supernatural force that is very feared by the Dayaks since this power may kill people immediately. Those who do the Maya parung with magical powers, usually use machetes with linjuang leaves that look like a single legged knife at dusk. Believes in supernatural power, so that if they experience swelling in the breast or breast, the pain is caused by spirit intrusion [6-11].

Based on the data obtained from Dharmais Cancer Hospital (2010), breast cancer was in first rank of the 10 largest cancers. Almost 85% of breast cancer patients come to the hospital in an advanced stage. This will affect the patient's prognosis and cure rate, if breast cancer is found in the early stages, the patient's recovery rate will be very good. One way to detect breast cancer very easily and without having to incur costs is to check it regularly, Dharmais Hospital, (2016).

The Head of the Division of Disease Control and Environmental Health of the East Kalimantan Provincial Health Office said that the cancer case is one of the deadliest diseases and causes a huge burden for the community where the prevalence reaches 1.4%. Breast cancer is the highest case in East Kalimantan, followed by cervical cancer, retinoblastoma ( eye cancer) and Leukemia cases (Provincial Health Office of East Kalimantan, 2016). The number of cases of those 4 diseases increased by 56.28% in just 1 year (East Kalimantan Provincial Health Office, 2016).

A research on the effectiveness of health education about Sadari in the Dayak tribe found out that the Dayak did not know how to conduct Sadari. The Dayak were not even considering conducting Sadari. The Dayaks were also fear of finding something bad. Those are their reasons for not conducting Sadari. Yet, after being given health education about Sadari, there were improvement of knowledge and changes in attitudes among Dayak tribes to perform Sadari (Ozdemir et al, 2007). Study conducted by Susanti (2014) also mentioned an increase in knowledge and changes in attitude on respondents after giving health education abut Sadari for early detection of breast cancer.