Table 2.
Descriptive characteristics of study sample
| Total Sample (n = 3059) |
Grade 6–8 (n = 1976) |
Grade 9–10 (n = 1083) |
|
|---|---|---|---|
| Gender | |||
| Male | 1449 (47.4) | 959 (48.5) | 490 (45.2) |
| Female | 1610 (52.6) | 1017 (51.5) | 593 (54.8) |
| No. concussions in past year | |||
| 0 | 2732 (89.3) | 1760 (89.1) | 972 (89.8) |
| 1 | 268 (8.8) | 178 (9.0) | 90 (8.3) |
| ≥ 2 | 59 (1.9) | 38 (1.9) | 21 (1.9) |
| Ethnicity | |||
| White | 2194 (71.7) | 1429 (72.3) | 765 (70.6) |
| Asian | 355 (11.6) | 204 (10.3) | 151 (13.9) |
| African American | 31 (1.0) | 19 (1.0) | 12 (1.1) |
| Other or multi-ethnic | 479 (15.7) | 324 (16.4) | 155 (14.3) |
| Perceived family wealth | |||
| Not at all or not very well-off | 304 (9.9) | 185 (9.4) | 119 (11.0) |
| Average or quite well-off | 2096 (68.5) | 1334 (67.5) | 762 (70.4) |
| Very well-off | 659 (21.5) | 457 (23.1) | 202 (18.7) |
Data presented as n (%)