Table 1.
Demographic Characteristics and Neuropsychological Performance of the Control and SCD Groups
| Variable | Alla participants (n = 53) | Control (n = 28) a | SCD (n = 25) a | p Value b |
|---|---|---|---|---|
| Age (y) | 66.87 ± 4.07 | 66.29 ± 3.73 | 67.52 ± 4.40 | .274 |
| Sex (male/female) | 28/25 | 18/10 | 10/15 | .077 |
| Education (y) | 11.45 ± 2.35 | 11.93 ± 2.48 | 10.92 ± 2.12 | .120 |
| SCD-Q9 | 3.33 ± 2.42 | 1.36 ± 1.17 | 5.54 ± 1.24 | <.001 |
| GDS-15 | 1.96 ± 1.81 | 1.64 ± 1.75 | 2.32 ± 1.84 | .176 |
| Functional Activity Questionnaire | 0.3 ± 0.82 | 0.14 ± 0.45 | 0.48 ± 1.09 | .158 |
| MoCA-BJ | 24.96 ± 2.16 | 25.32 ± 2.29 | 24.56 ± 1.96 | .202 |
| Digit Span Forward | 7.43 ± 1.26 | 7.57 ± 1.32 | 7.28 ± 1.21 | .407 |
| Digit Span Backward | 4.64 ± 1.21 | 4.71 ± 1.36 | 4.56 ± 1.04 | .648 |
| Trail Making Test (s)c | 43.93 ± 27.54 | 43.61 ± 29.57 | 44.28 ± 25.67 | .930 |
| Verbal Fluency Test | 18.38 ± 4.03 | 18.57 ± 3.63 | 18.16 ± 4.50 | .714 |
| AVLT (total learning)d | 50.08 ± 7.12 | 51.04 ± 6.88 | 49.00 ± 7.37 | .303 |
| AVLT (delayed recall) | 10.85 ± 1.95 | 11.18 ± 1.85 | 10.48 ± 2.02 | .195 |
| Paired Associative Learning Test | 8.77 ± 3.23 | 8.61 ± 3.20 | 8.96 ± 3.31 | .695 |
Notes: AVLT = Auditory Verbal Learning Test; GDS = 15-item Geriatric Depression Scale; MoCA-BJ = Montreal Cognitive Assessment Beijing Version; SCD = Subjective Cognitive Decline; SCD-Q9 = 9-item Subjective Cognitive Decline Questionnaire.
aData are shown as mean and standard deviation except for Sex (male/female), which is number of participants.
bIndependent samples t test or Pearson chi-square test.
cTrail-making scores were obtained using Trail Making B minus Trail Making A.
dAVLT total learning refers to the total number of words immediately recalled during the five learning trials.