Table 2.
Neuropsychological test results of the POCD and non-POCD groups
| Test | Score or time (s) |
P | |
| Non-POCD (n=25) | POCD (n=21) | ||
| MMSE | |||
| Pre-operative | 29.00±0.67 | 29.30±0.34 | 0.054 |
| Pod#7 | 28.83±0.68 | 27.10±0.41*, ** | <0.001 |
| DSST | |||
| Pre-operative | 32.32±4.75 | 31.00±4.23 | 0.329 |
| Pod#7 | 29.96±4.86 | 26.14±3.13*, ** | 0.003 |
| Trail making test A (s) | |||
| Pre-operative | 17.60±5.68 | 19.40±5.62 | 0.289 |
| Pod#7 | 17.84±6.06 | 20.50±5.86 | 0.140 |
| VFT | |||
| Pre-operative | 16.70±1.77 | 16.01±1.58 | 0.180 |
| Pod#7 | 16.35±1.85 | 14.51±1.71*, ** | <0.001 |
| Word recognition memory test | |||
| Pre-operative | 1.20±0.44 | 1.30±0.48 | 0.689 |
| Pod#7 | 1.40±0.43 | 1.90±0.42 | 0.965 |
The test results (scores, except time (s) for trail making test A) are presented as mean±SD. Pod#7: post-operative Day 7; MMSE: mini-mental state examination; DSST: digit symbol substitutions test; VFT: verbal fluency test
*
P<0.05, vs. non-POCD group
**
P<0.05, vs. baseline in either group