Table 1. Sample Demographics.
|
Younger controls |
Younger patients |
Older controls |
Older patients |
|||||
|---|---|---|---|---|---|---|---|---|
| Males (N=40) | Females (N=23) | Males (N=47) | Females (N=18) | Males (N=29) | Females (N=19) | Males (N=30) | Females (N=18) | |
| Age (years) | 20.1 (4.1) | 20.7 (2.5) | 21.1 (3.3) | 19.9 (4.0) | 43.6 (8.8) | 45.7 (9.1) | 45.0 (8.7) | 46.2 (9.7) |
| Laterality quotient | 0.71 (44) | 0.69 (0.54) | 0.65 (0.45) | 0.73 (0.54) | 0.76 (0.53) | 0.86 (0.43) | 0.55 (0.71) | 0.97 (0.06) |
| Education (years) | 12.4 (2.9) | 13.9 (1.8) | 12.4 (1.7) | 12.4 (2.6) | 14.8 (1.8) | 15.1 (1.9) | 13.1 (2.5) | 13.4 (2.0) |
Notes: Data are presented as mean±SD in parentheses, unless otherwise indicated. Younger is defined as <30 years, whereas older is defined as age ⩾30 years. Laterality scores were based on a modified version of the Edinburgh Inventory. The total number of right and left hand items was scored and the laterality quotient was computed: (Total R−Total L)/(Total R+Total L) yielding a range from +1.00 (totally dextral) to −1.00 (totally nondextral).