Analysis of test-retest reliability of the scale of postoperative cognitive dysfunction
PENG Tao
WU Dan
YANG Xiaoming
CHEN Zhi
Abstract：Objective To investigate the test-retest reliability of the scale of postoperative cognitive dysfunction. Methods Fifty healthy elderly people were randomly selected and tested by the scale of postoperative cognitive dysfunction, involving visual verbal learning (VVL), concept shifting task (CST), stroop colour word test (SCWT) and symbol digit substitution coding (SDSC). After the first test (T1), they were tested three days (T2) and seven days (T3) later. The test results were recorded each time and the test-retest reliability was calculated. Results Compared with T1, the scores of VVL and SDSC on T2 and T3 were increased, but the scores of SCWT were decreased, and there were no significant changes in CST. The split half reliability of two parts of the total scale was greater than 0.5. The test-retest reliability of VVL, SDSC and SCWT was high (r=0.564-0.951,P<0.01). The test-retest reliability of the time part in CST was high (r=0.725-0.779,P<0.01), but was low in the number of errors in CST (r=0.000-0.316,P>0.05). Conclusion The measurement scale of postoperative cognitive dysfunction has some learning effects, and the test-retest reliability is high, so it can be used to evaluate postoperative cognitive dysfunction.
Keywords：test-retest reliabilitypostoperative cognitive dysfunctionscaleelderly
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 261-263,266 )