TABLE 1.
Descriptive statistics by age groups.
| Participants aged 18 to 40 years |
Participants aged 41 to 60 years |
Participants aged over 60 years |
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| Mean ± SD | Range | Mean ± SD | Range | Mean ± SD | Range | |
| Age | 33.98 ± 4.26 | 18–40 | 48.14 ± 4.16 | 41–60 | 69.27 ± 8.53 | 61–84 |
| Sex (F/M)* | 24/25 | 30/20 | 25/12 | |||
| MMSE | NA | NA | NA | NA | 25.66 ± 4.60 | 13–30 |
| Raven’s Coloured Progressive Matrices (age- and education- adjusted scores)* | 26.24 ± 4.29 | 19.2–32.4 | 26.44 ± 4.10 | 19.3–31.3 | 26.92 ± 5.05 | 19.5–36.3 |
SD, standard deviation; NA, not assessed; MMSE, mini mental state examination.*Sex and age- and education- adjusted scores of Raven’s Colored progressive Matrices are not statistically different among groups (sex: χ2 = 2.78, p = 0.248; Raven’s Coloured progressive Matrices: H = 0.41 p = 0.812).