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The results of two groups’ neuropsychological test.
| 1st day | 7th day | POCD | |
|---|---|---|---|
| Group C | 25.20 ± 2.44 | 23.13 ± 2.84 | 13 (n = 30) |
| Group U | 24.32 ± 3.31 | 24.84 ± 3.43 | 5 (n = 30) |
Cognitive change value = Scorethe day beforeoperation-scorethe post-operationday 7-practice effect. Values = mean ± SD. Z Score = Cognitive change value(patients)/SD(community volunteers). Z ≥ 1.96 was considered as POCD.
