Table 3.
Demographic characteristics of North American Youth MCCB sample
|
Age Cohort/
Characteristics |
12-13
(n = 24)* |
14-15
(n = 37)* |
16-17
(n = 39)* |
18-19
(n = 39)* |
12-19
combined (n = 139)* |
|---|---|---|---|---|---|
| Age M (SD) | 13.1 (0.6) | 14.9 (0.6) | 17.0 (0.5) | 19.1 (0.6) | 16.3 (2.2) |
| Gender, Males N (%) | 18 (75%) | 24 (65%) | 21 (54%) | 20 (51%) | 83 (60%) |
| Participant Years of Educationa M (SD) |
6.8 (0.9) | 8.4 (0.9) | 10.4 (0.8) | 12.5 (0.6) | 9.8 (2.2) |
| Median Parental Education Levelb |
7.0 | 7.0 | 7.0 | 7.0 | 7.0 |
| Median Household Incomec | 6.0 | 5.0 | 6.0 | 5.0 | 5.5 |
| Race: Caucasian N (%) | 15 (63%) | 23 (62%) | 18 (46%) | 23 (59%) | 79 (57%) |
| Ethnicity: Non- Hispanic/Latino N (%) |
22 (92%) | 29 (78%) | 32 (82%) | 33 (85%) | 116 (84%) |
| Handedness Right N (%) | 24 (100%) | 34 (92%) | 31 (80%) | 33 (85%) | 122 (88%) |
| WASI FSIQa,d M (SD) | 109.5 (15.9) |
107.0 (11.9) |
104.2 (18.3) |
116.6 (12.6) |
109.3 (15.4) range 72- 139 |
| GAF, M (SD) | 85.3 (11.5) | 83.8 (9.6) | 79.7 (13.1) | 83.6 (9.6) | 82.8 (11.1) |
| Global Functioning Scale, M (SD) Social Role |
8.9 (1.1) 8.6 (1.6) |
9.0 (0.7) 8.5 (1.0) |
8.5 (1.2) 8.1 (1.4) |
8.7 (0.8) 8.7 (0.8) |
8.8 (1.0) 8.5 (1.2) |
Note: All sites contributed to each 2-year age band except for the 12-13 year olds for whom none came from the
University of North Carolina.
ns vary by variable; actual n indicated in notes for superscript letters b and c below.
Significant age group differences were found for WASI FSIQ (p =0.002) and education (p < .001); Participant age and education level are highly correlated (r = 0.96).
Highest level of education achieved by participant’s mother or father. 6: some college/technical school/undergraduate education; 7: completed college/technical school/ undergraduate education; 8: some graduate/professional school; ns: 23, 35, 38, 38, and 134 left to right across columns.
Median Household Income: 5: $60,000-99,999, 6: $100,000 and above. ns: 24, 33, 37, 32, and 126 left to right across columns.
Wechsler Abbreviated Scale of Intelligence (WASI) Full Scale IQ estimate is based on administration of two subtests: Vocabulary and Block Design.