Table 2:
Demographics of study samples and total sample
| US Study 1 (n = 99) |
US Study 2 (n = 73) |
Canadian Study (n = 278) |
Total Sample (n = 450) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| Age (y) | 11.76 | 2.23 | 12.34 | 2.38 | 12.63 | 2.19 | 12.39 | 2.25 | |
| n | % | n | % | n | % | n | % | ||
| Child’s sex | Female | 35 | 35.4 | 25 | 34.2 | 128 | 46.0 | 188 | 41.8 |
| Male | 64 | 64.6 | 48 | 65.8 | 150 | 54.0 | 262 | 58.2 | |
| Child’s race | White | 64 | 64.6 | 26 | 35.6 | 194 | 70.3 | 284 | 63.4 |
| Black | 32 | 32.3 | 31 | 42.5 | 7 | 2.5 | 70 | 15.8 | |
| Asian | 0 | 0 | 0 | 0 | 22 | 8.0 | 22 | 4.9 | |
| Hispanic | 0 | 0 | 4 | 5.5 | 12 | 4.3 | 16 | 3.6 | |
| Indigenous | 0 | 0 | 0 | 0 | 3 | 1.1 | 3 | 0.7 | |
| Multiracial | 3 | 3.0 | 12 | 16.4 | 38 | 13.8 | 53 | 11.8 | |
| Maternal education | Less than high school | 9 | 9.1 | 6 | 8.2 | 6 | 2.2 | 21 | 4.7 |
| High school or equivalent | 29 | 29.3 | 17 | 23.3 | 33 | 11.9 | 79 | 17.6 | |
| Partial college, or trade/college diploma | 25 | 25.3 | 35 | 47.9 | 79 | 28.4 | 139 | 30.9 | |
| Bachelor’s degree | 24 | 24.2 | 9 | 12.3 | 91 | 32.7 | 124 | 27.6 | |
| Graduate degree | 10 | 10.1 | 6 | 8.2 | 52 | 18.7 | 68 | 15.1 | |
| Unknown | 2 | 2.0 | 0 | 0 | 17 | 6.1 | 19 | 4.2 | |
Note: US = United States