Table 1.
Basic characteristics and cognitive measures of normal control and subjective cognitive impairment groups
| Variable | NC (n = 20) | SCI (n = 27) | p valuea |
|---|---|---|---|
| Age (yr) | 70.20 ± 7.46 | 69.07 ± 8.14 | 0.511 |
| Sex | 0.188 | ||
| Male | 8 (40.0) | 6 (22.2) | |
| Female | 12 (60.0) | 21 (77.8) | |
| Education (yr) | 10.58 ± 5.39 | 5.93 ± 5.25 | 0.005** |
| APOE4 allele carriers | 5 (25.0) | 8 (29.6) | 0.831 |
| MMSE | 27.05 ± 2.88 | 23.67 ± 4.29 | 0.002** |
| GDS | 8.44 ± 5.54 | 16.96 ± 6.20 | < 0.001** |
| CERAD | |||
| Constructional praxis | 9.94 ± 1.95 | 8.96 ± 1.59 | 0.011* |
| Word list memory | 17.06 ± 5.05 | 15.54 ± 4.22 | 0.131 |
| Word list recall | 6.63 ± 1.26 | 5.31 ± 2.02 | 0.026* |
| Word list recognition | 9.47 ± 0.70 | 8.96 ± 1.11 | 0.140 |
| Constructional recall | 8.00 ± 2.20 | 5.38 ± 2.98 | 0.004** |
| Verbal fluency | 15.79 ± 3.85 | 13.42 ± 3.29 | 0.052 |
| Boston Naming Test | 12.84 ± 2.04 | 10.42 ± 2.64 | 0.001** |
| Trail Making Test A (sec) | 58.57 ± 14.99 | 91.08 ± 49.43 | 0.046* |
Values are presented as mean ± standard deviation or number (%).
NC, normal control; SCI, subjective cognitive impairment; APOE, apolipoprotein E; MMSE, Mini-Mental State Examination; GDS, Geriatric Depression Scale; CERAD, Consortium to Establish a Registry for Alzheimer’s Disease.
a pvalue were calculated using the chi-squared test or Fisher’s exact test and the Mann−Whitney test.
*p < 0.05. **p < 0.01.