2.4. Additional information
tumor
TUMOR, RECRUITMENT
The age, sex, BMI, marital status, degree of education, diameter of the tumor, and child grading of liver function of the patients were also recorded using the hospital information system.The following measures were taken to ensure the validity and reliability of the result measurement: (1) strict adherence to exclusion criteria when selecting eligible research participants; (2) recruitment of questionnaire investigators who were qualified nurses working in the same hospital’s hepatobiliary surgery ward and had undergone standardized training; (3) immediate scrutiny of completed questionnaires by investigators to eliminate any invalid ones; (4) implementation of a two-person data entry method into Excel 2019 to establish a database, ensuring input data accuracy and integrity; (5) inclusion of statisticians with relevant statistical knowledge background.