Reliability and validity
tumor
TUMOR
A content validity index (CVI) was used to test the content validity of the questionnaire. Content validity testing was conducted by five scholars and clinical experts in related fields, including a nurse with more than 10 years of clinical experience and a relevant specialist qualification and physicians and radiologists with more than 10 years of experience in the field of clinical tumor radiology. A four-point scoring method was adopted. After a review, the CVI was approved and used by the experts. The sum of the scores greater than or equal to three was divided by the number of all experts to determine the consistency of questionnaire items.