Table 2. Neuropsychological test in subjective cognitive decline patients with amyloid positive scan and amyloid negative scan.
| Characteristics | Overall (n=120) | Amyloid PET (−) (n=94) | Amyloid PET (+) (n=26) | p-value |
|---|---|---|---|---|
| DST:F (z-score) | 0.6±1.1 | 0.6±1.1 | 0.5±1.2 | 0.516 |
| K-BNT (z-score) | 0.4±1.0 | 0.5±1.0 | 0.2±1.1 | 0.293 |
| RCFT-copy (z-score) | 0.2±0.6 | 0.2±0.6 | 0.3±0.6 | 0.520 |
| SVLT-E: delayed recall (z-score) | −0.7±0.5 | −0.6±0.5 | −0.8±0.5 | 0.113 |
| RCFT: delayed recall (z-score) | 0.0±0.8 | 0.0±0.8 | −0.1±0.9 | 0.238 |
| DSC (z-score) | 0.5±1.0 | 0.6±1.0 | 0.1±1.1 | 0.137 |
| COWAT (z-score) | 0.2±1.0 | 0.2±0.9 | 0.3±1.3 | 0.997 |
| K-TMT-E:B (z-score) | 0.3±0.6 | 0.4±0.6 | 0.2±0.7 | 0.224 |
| K-CWST:CR (z-score) | 0.1±0.8 | 0.2±0.8 | −0.1±0.9 | 0.287 |
| Total MMSE score | 27.2±2.0 | 27.4±1.9 | 26.8±2.3 | 0.282 |
Values are mean ± standard deviation. The p-values were determined by the χ2 test, Fisher’s exact test, or the Wilcoxon rank sum test.
PET: positron emission tomography, DST:F: Digit-Span Test: Forward, K-BNT: Korean version of the Boston Naming Test, RCFT: Rey-Osterrieth Complex Figure Test, SVLT-E: Seoul Verbal Learning Test-Elderly, DSC: digit symbol coding, COWAT: Controlled Oral Word Association Test; K-TMT-E:B: Korean-Trail Making Test-Elderly: B, K-CWST:CR: Korean Color Word Stroop Test: Color Reading, MMSE: Mini-Mental State Examination.