Abstract: Objective: To translate the Stanford Proxy Test for Delirium (S-PTD) into Chinese and test its reliability and validity. Methods: The translation process followed the Brislin's model. We recruited 458 patients who were undergoing gastrointestinal surgery in a tertiary grade A hospital in Jiangsu province from October 2021 to September 2022 by convenience sampling method to test the scale's reliability and validity. Results: The content validity of Chinese S-PTD scale was 0.95, and the content validity of each item was 0.78-1.00. By exploring factor analysis, three common factors were extracted, and the cumulative variance contribution rate was 59.368%. The Kappa value of inter-evaluator reliability was 0.981. The Cronbach's α coefficient of the scale was 0.827, the Cronbach's α coefficient of each dimension was 0.726-0.741, Guttman's half-reliability was 0.738, and the test-retest reliability was 0.783. The scale threshold was 3 points, the area under ROC curve was 0.853, the sensitivity was 0.678, and the specificity was 0.935. Conclusion: The Chinese version of S-PTD scale has good reliability and validity, it can be used for the screening of postoperative delirium patients by Chinese nurses.

Key words: delirium; scale; cross-cultural adaptation; reliability; validity