Table 1.
Characteristic | Response | Group 1 N=31 |
Group 2 N=27 |
Group 3 N=36 |
Group 4 N=35 |
---|---|---|---|---|---|
Age, mean (SD) | Years | 15 (1.0) | 14.7 (1.0) | 14.8 (0.9) | 14.8 (1.0) |
Sex, No. (%) | Male | 15 (48%) | 13 (48%) | 17 (47%) | 9 (26%) |
Grade in schoola | 9 | 15/30 (50%) | 18/27 (67%) | 24/36 (67%) | 18/32 (56%) |
10 | 11/30 (37%) | 4/27 (15%) | 5 (14%) | 9/32 (28%) | |
11 | 2/30 (7%) | 2/27 (7%) | 4 (11%) | 2/32 (6%) | |
12 | 2/30 (7%) | 3/27 (11%) | 3 (8%) | 3/32 (9%) | |
Dominant hand | Right | 27 (87%) | 26 (96%) | 35 (97%) | 33 (94%) |
asome students did not provide an answer