Validity and reliability of instruments
Cronbach’s α of SAS was 0.932.The content validity index of the nursing care checklist for CTO patients was 0.82, and internalconsensus reliability Cronbach’s α coefficient was 0.859. The content validity index of theDoctors’ Satisfaction with Nursing Care Questionnairewas 0.85, and internalconsensus reliability Cronbach’s α coefficient was 0.893. Thecontent validity index of Patients’ Satisfaction with Nursing Care Questionnairewas 0.83, and internal consensus reliability Cronbach’s α coefficient was 0.898. All the above scales have good reliability and validity.