3.2. Data collection

According to our inclusion and exclusion criteria and the informed consent of patients, we distributed 228 questionnaires to eligible LT recipients in the LT outpatient department of the two hospitals. To ensure the authenticity and the response rate of the study, the purpose, significance and confidentiality of the study were explained to the candidates. During the questionnaire filling process, researchers were present, and participants could ask questions related to the questionnaire filling at any time. After participants completed the questionnaire, researchers checked for completeness. For the participants who did not complete the information, try to ask them to complete the information.