Aim: The purpose of this study was to examine the effect of health care transition-based education on transition readiness and self-efficacy in adolescents (14-18 years) with asthma through a randomized controlled experimental study that integrated the literature, model, and research on the transition from pediatrics to adult care.

The research hypotheses are as follows:

H0: There is no significant difference between the intervention and control groups' mean "Transition Readiness Assessment Questionnaire", "Self Efficacy Scale for Children and Adolescents with Asthma" and "Mind the Gap Scale" scores before and after the education they received on health care transition.

H1: The mean "Transition Readiness Assessment Questionnaire", "Self Efficacy Scale for Children and Adolescents with Asthma" and "Mind the Gap Scale" score of the treatment group is significantly higher than the control group after the education they received on health care transition.

Asthma is one of the most prevalent chronic inflammatory diseases in children, negatively impacting more than 7.5% of those under the age of 18. Data indicate that more than half of children with asthma have asthma management failures, resulting in increased healthcare use. Because childhood asthma is a risk factor for the development of chronic obstructive pulmonary disease later in life, it is critical to keep adolescents on track even if their asthma is mild. Furthermore, despite adolescent remission, asthma can resurface in adulthood. As a result, it is critical to identify the factors influencing the transition from pediatric to adult services and to plan for an appropriate transition. Adolescents are expected to be capable of self-management in their own lives and to be willing to accept responsibility for their own health. However, the disparities in care and approach difference between pediatric and adult services increase adolescent resistance to adult care. Following the transition, many difficulties can arise, including changing the adult doctor, failing to attend regular check-ups, discontinuing medication, increasing the use of emergency rooms, and increasing the cost of care. Furthermore, parents become concerned that their children will be unable to care for themselves during the transition to adult service. Health care transition is the deliberate and planned transfer of chronically diagnosed adolescents and young adults' physical and medical conditions from pediatrics-centered care to the adult health care system. Comprehensive planning and information are essential for reducing their anxiety and uncertainty about the transition. The purpose of this study was to examine the effect of health care transition-based education on transition readiness and self-efficacy in adolescents (14-18 years) with asthma through a randomized controlled experimental study that integrated the literature, model, and research on the transition from pediatrics to adult care. The number of children in the groups will be analyzed based on another study in which one of the scales to be used in the study. According to the calculations made in the G-Power 3.1 Demo package program, when the effect size is accepted as 0.75, it was seen that at least 23 cases in each group would be sufficient for 90% power. Because of the possibility of data loss among the participants, it was planned to recruit a total of 60 adolescents. Following the study, power analysis was carried out using the GPOWER 3.1.7 statistical analysis software. The intervention group: Adolescents with asthma will receive one-on-one training on transitioning from the pediatric to adult care, as well as on asthma self-management skills. After retrieving the written consent from the parents and the adolescents, the trainings will be held every two weeks for a total of six sessions over Zoom for three months. Following each training session, four face-to-face individual interviews will be held in a hospital quiet room. Individual interviews at the hospital have been scheduled to last 30 to 40 minutes, with one-on-one training sessions lasting an average of 40 minutes. The adolescent and parent will receive reminder messages the day before the training sessions and the face-to-face meeting. Not all control group participants will receive health care transition-based training. The control group will receive standard outpatient clinic asthma treatment during this process. Following the completion of the study, a training booklet will be distributed to the children in the control group in a way that does not affect the study data.

Inclusion Criteria:

• Being between the ages of 14-18
• Adolescent and parent's consent to participate in the research
• Completing all trainings and follow-ups during the research period.
• Understanding and speaking Turkish
• Having had an asthma diagnosis for at least a year
• Having no mental deficiency that may prevent communication
• Access to internet and a computer

Exclusion Criteria:

• Not being between the ages of 14-18
• Another chronic disease
• Not completing all trainings and follow-ups during the research period.