The contents of the research were created according to the Roy Adaptation model. Each session lasted an average of 2 hours.

Peer interactive group support sessions were administered to the adolescents in the intervention group, one week apart. There were 7 sessions in total. The sitting arrangement of the training room is designed to allow children to interact with each other . The sessions lasted an average of 90 minutes as two 45-minute sessions. Between sessions, breaks that lasted for about 15 minutes were given and refreshments prepared for individuals with Type 1 diabetes were served during the breaks. During the break, the adolescents were given the opportunity to interact with each other by chatting. Fun exercise and kitchen workshop activities were also organized as interaction sessions in the initiative group.

Adolescents and their families were informed in the diabetes education room in the pediatric endocrine service of the hospital where the study was conducted, and their written consent was obtained. Within the scope of the pre-test, "Diabetes Adolescent Diagnosis Form", "Diabetes Information Evaluation Form", "Diabetes Management Self-Efficacy Scale in Adolescents with Type 1 Diabetes" and "Child's Attitude towards Own Disease Scale" were applied. Then, individual diabetes education was given by the diabetes education nurse as a hospital routine. Three months after the training, the adolescents were called by phone to the hospital for control, HbA1c follow-up was taken and post-test applications were made.

Data were collected with data collection forms consisting of " Diabetes Adolescent Diagnosis Form", "Diabetes Information Evaluation Form", "Diabetes Management Self-Efficacy Scale in Adolescents with Type 1 Diabetes" and "Child's Attitude towards Own Disease Scale" .

The contents of the research were created according to the Roy Adaptation model. Each session lasted an average of 2 hours.

Peer interactive group support sessions were administered to the adolescents in the intervention group, one week apart. There were 7 sessions in total. The sessions lasted an average of 90 minutes as two 45-minute sessions. Between sessions, breaks that lasted for about 15 minutes were given and refreshments prepared for individuals with Type 1 diabetes were served during the breaks. During the break, the adolescents were given the opportunity to interact with each other by chatting. Fun exercise and kitchen workshop activities were also organized as interaction sessions in the initiative group.

The data obtained from the research were evaluated using appropriate statistical methods. In the analysis of comparative data, parametric or nonparametric tests were used by evaluating the conformity to the normal distribution . As descriptive statistics; numbers and percentages are given. In addition, mean and standard deviation values are given for those with normal distribution, and minimum and maximum values, median and percentiles of 25-75 % for those who do not show normal distribution.