Table 2.
Sociodemographic, cultural and clinical characteristics of preliminary normative groups for Digit span test.
| Groups by age and education |
19-39 years old | 40-59 years old | 60-75 years old | p | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Five to eight (n=14) Mean (SD) |
Nine or more (n=30) Mean (SD) |
Five to eight (n=11) Mean (SD) |
Nine or more (n=20) Mean (SD) |
Five to eight (n=14) Mean (SD) |
Nine or more (n=34) Mean (SD) |
|||||
| Age (years) | 33.64 (5.03) | 26.93 (5.95) | 49.73 (6.05) | 49.50 (7.09) | 66.43 (4.07) | 65.74 (3.73) | <0.001 | |||
| Education (years) | 6.14 (0.94) | 13.63 (3.14) | 6.18 (1.25) | 13.88 (3.49) | 5.86 (1.16) | 14.18 (3.83) | <0.001 | |||
| Sex | Male | 2 | 16 | 2 | 5 | 1 | 10 | 0.015 | ||
| Female | 12 | 14 | 9 | 15 | 13 | 24 | ||||
| Reading and writing habits | 9.36 (3.27) | 12.07 (4.94) | 10.82 (4.28) | 14.85 (5.85) | 11.43 (6.50) | 15.21 (4.65) | 0.001 | |||
| MMSE score | * | * | 26.36 (1.91) | 28.15 (1.56) | 26.64 (2.56) | 27.47 (2.14) | 0.073 | |||
| GDS 30 | 11.29 (4.32) | 7.23 (4.65) | 6.73 (5.01) | 8.94 (4.75) | 6.10 (4.72) | 5.70 (3.27) | 0.008 | |||
| GDS 15 | 5.43 (2.01) | 3.27 (2.37) | 3.27 (2.61) | 4.40 (2.28) | 2.86 (1.91) | 2.67 (1.70) | 0.001 | |||
*
MMSE was not administered to 19-39 year-old individuals.