Table 1.
Sample characteristics among respondents (n= 11,192)
| Total | Boys | Girls | |||||
|---|---|---|---|---|---|---|---|
| n | % | n | %/mean | n | %/mean | p-valuex | |
| Sex (baseline) | |||||||
| Male | (5851) | 52.3% | NA | NA | NA | NA | |
| Female | (5337) | 47.7% | NA | NA | NA | NA | |
| Race (baseline) | |||||||
| White | (7942) | 71.0% | (4250) | 71.9% | (3734) | 70.0% | p=.086 |
| Black | (2258) | 20.2% | (1143) | 19.5% | (1114) | 20.9% | |
| Other | (992) | 8.9% | (503) | 8.6% | (489) | 9.2% | |
| Hispanic (baseline) | |||||||
| Hispanic | (2214) | 20.0% | (1156) | 20.0% | (1057) | 20.0% | p=.988 |
| Non-Hispanic | (8841) | 80.0% | (4617) | 80.0% | (4221) | 80.0% | |
| Age (baseline) | |||||||
| 9 years old | (6322) | 56.5% | (3236) | 55.3% | (3085) | 57.8% | p=.008 |
| 10 years old | (4867) | 43.5% | (2613) | 44.7% | (2251) | 42.2% | |
| Parental Level of Education (baseline) | |||||||
| Highest level of education is less than a high school degree | (521) | 4.7% | (251) | 4.3% | (270) | 5.1% | p=.249 |
| Highest level of education is a high school degree only | (997) | 8.9% | (518) | 8.9% | (479) | 9.0% | |
| Highest level of education is some college | (2837) | 25.4% | (1502) | 25.7% | (1333) | 25.0% | |
| Highest level of education is a college degree or higher | (6821) | 61.0% | (3568) | 61.1% | (3251) | 61.0% | |
| Income (baseline) | |||||||
| $0 to $24,999 | (1444) | 14.0% | (770) | 14.4% | (674) | 13.7% | p=.491 |
| $25,00 to $99,999 | (4408) | 42.9% | (2274) | 42.4% | (2133) | 43.4% | |
| $100,000 or more | (4431) | 43.1% | (2320) | 43.3% | (2109) | 42.9% | |
| Psychiatric Disorders at Baseline | |||||||
| CBCL Anxiety (T-scores greater or equal to 70) | (314) | 2.8% | (157) | 2.7% | (156) | 2.9% | p=.411 |
| CBCL Depression (T-scores greater or equal to 70) | (292) | 2.6% | (200) | 3.4% | (92) | 1.7% | p<.001 |
| CBCL Somatic (T-scores greater or equal to 70) | (324) | 2.9% | (161) | 2.8% | (162) | 3.0% | p=.370 |
| CBCL Social problems (T-scores greater or equal to 70) | (184) | 1.6% | (102) | 1.7% | (81) | 1.5% | p=.348 |
| CBCL Thought problems (T-scores greater or equal to 70) | (468) | 4.2% | (320) | 5.5% | (148) | 2.8% | p<.001 |
| CBCL Attention problems (T-scores greater or equal to 70) | (316) | 2.8% | (174) | 3.0% | (142) | 2.7% | p=.319 |
| CBCL Aggression (T-scores greater or equal to 70) | (251) | 2.2% | (165) | 2.8% | (86) | 1.6% | p<.001 |
| CBCL ADHD (T-scores greater or equal to 70) | (322) | 2.9% | (197) | 3.4% | (125) | 2.3% | p<.001 |
| CBCL Conduct problems (T-scores greater or equal to 70) | (298) | 2.7% | (161) | 2.8% | (137) | 2.6% | p=.546 |
| Psychiatric Disorders at first One Year Follow-up | |||||||
| CBCL Anxiety (T-scores greater or equal to 70) | (325) | 2.9% | (172) | 2.9% | (152) | 2.8% | p=.771 |
| CBCL Depression (T-scores greater or equal to 70) | (333) | 3.0% | (222) | 3.8% | (111) | 2.1% | p<.001 |
| CBCL Somatic (T-scores greater or equal to 70) | (331) | 3.0% | (164) | 2.8% | (166) | 3.1% | p=.339 |
| CBCL Social problems (T-scores greater or equal to 70) | (162) | 1.4% | (77) | 1.3% | (85) | 1.6% | p=.222 |
| CBCL Thought problems (T-scores greater or equal to 70) | (491) | 4.4% | (312) | 5.3% | (179) | 3.4% | p<.001 |
| CBCL Attention problems (T-scores greater or equal to 70) | (324) | 2.9% | (172) | 2.9% | (152) | 2.8% | p=.771 |
| CBCL Aggression (T-scores greater or equal to 70) | (246) | 2.2% | (153) | 2.6% | (93) | 1.7% | p=.002 |
| CBCL ADHD (T-scores greater or equal to 70) | (289) | 2.6% | (184) | 3.1% | (105) | 2.0% | p<.001 |
| CBCL Conduct problems (T-scores greater or equal to 70) | (282) | 2.5% | (148) | 2.5% | (134) | 2.5% | .948 |
| Reported a Concussion (Lifetime) – 686 removed missing | |||||||
| Never had a TBI | (9667) | 86.4% | (4908) | 83.9% | (4757) | 89.1% | p<.001 |
| New incident TBI from baseline to first follow-up | (157) | 1.4% | (97) | 1.7% | (60) | 1.1% | |
| TBI in the past but not in the past year | (1318) | 11.8% | (810) | 13.8% | (506) | 9.5% | |
| TBI in the past and in the past year | (50) | 0.4% | (36) | 0.6% | (14) | 0.3% | |
x
Chi-square tests of independence were used to assess bivariate differences between boys and girls.