Validation of the Chinese version of the colostomy impact score in rectal cancer patients with permanent colostomy.

OBJECTIVE: To test the reliability and validity of the Chinese version of the colostomy impact score (CIS) among patients with a permanent colostomy in China. METHODS: A total of 218 patients completed the survey either in the clinic or remotely and mailed their responses. Reliability was estimated based on test-retest reliability. Validity was evaluated based on content validity, construct validity, and discriminative validity. The sensitivity and specificity of the score were analysed. The area under the curve was analysed by drawing the receiver-operating characteristic (ROC) curve; the optimal cutoff point was calculated to assess the impact of a stoma on domestic patients. RESULTS: The test-retest reliability of the CIS was 0.967. The content validity was 0.98, and the construct and discriminative validities were good; sensitivity, specificity, and area under the ROC curve were 100, 48.53, and 0.806%, respectively. The optimal cutoff point for the Chinese version of the Colostomy Impact Score was 11.5. CONCLUSIONS: The Chinese version of the CIS indicated good reliability and validity, making it suitable for the evaluation of the impact of a permanent colostomy.