IRCT20111203008286N7 IRCT 2019-10-14 Tehran University of Medical Sciences training on tracheotomy care u Comparison of the effect of training on tracheotomy care using simulation and application methods on the anxiety and self-efficacy of the main caregivers of the patients admitted at home 2019-11-20 anticipated 126 Complete https://irct.ir/trial/41899 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Research samples (main caregiver) with inclusion criteria will be divided into three groups using blocking method. There are 9 possible ways to equally assign participants to block. Allocation proceeds by randomly selection by randomization.com and after that participants enter the study. N/A Anxiety and self-efficacy of the main caregiver. Intervention 1: Intervention group: After getting informed consent, anxiety and self-efficacy questionnaires will be given to the samples and then the application will be installed on their mobile phones and their levels of anxiety and self-efficacy will be measured a month later . Intervention 2: Intervention group2:After getting informed consent, the anxiety and self-efficacy questionnaires were given to the samples, and exactly the same educational content as trained for the application group, in three 15-minute sessions and in the final three days before discharge to the hospital in the center. The clinical skills training of the Tehran School of Nursing and Midwifery will be taught to the patient's primary caregiver. Then, one month after clearing their anxiety levels and self-efficacy will be measured. Intervention 3: Control group: At first, informed consent forms, anxiety and self-efficacy questionnaires will be completed, will receive routine care, and will be completed one month after the anxiety and self-efficacy questionnaire is discharged.  After studying the educational content they will be provided. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No mention reason