Comparison of demographic variables between participants with HA and controls
| . | Controls . | HA . | Controls vs HA . |
|---|---|---|---|
| n = 23 . | n = 9 . | P value . | |
| Age, mean (SD), y | 11.8 (2.7) | 10.4 (3.7) | .24 |
| Height (mean), cm | 152.3 (16.3) | 141.8 (23.2) | .16 |
| Weight (mean), kg | 43.7 (14.1) | 47.7 (40.1) | .67 |
| Paternal education, mean (SD), y | 17.0 (2.5) | 14.4 (1.7) | .008 |
| Maternal education, mean (SD), y | 16.7 (2.4) | 15.7 (2.8) | .33 |
| Assistance at school through a 504 plan or Individualized Learning Plan, n (%) | 1 (4.3%) | 2 (22%) | ∗χ2 = 2.43, P = .18 |
| Intellectual disability, n (%) | 0 (0%) | 0 (0%) | >.99 |
| Parental SES, n | |||
| Professional degree or college or advanced degree | 19 | 5 | ∗χ2 = 3.94, P = .14 |
| White collar, semiskilled worker, high school education | 4 | 3 | |
| Semiskilled worker/laborer below secondary education | 0 | 1 | |
| Racial identity, n | |||
| White | 22 | 8 | ∗χ2 = .50, P = .48 |
| Other | 1 | 1 | |
| Family history of psychiatric disease, n | 10 | 6 | .25 |
| Fetal hypoxia, n | 5 | 1 | .50 |
| Hemophilia-related variables | |||
| Use of prophylaxis, n (%) | - | 9 (100%) | |
| Age at prophylaxis initiation, mean (median), mo | - | 26 (17) | |
| Annual rate of bleeding, mean (median) | - | 3.6 (2.0) | - |
| . | Controls . | HA . | Controls vs HA . |
|---|---|---|---|
| n = 23 . | n = 9 . | P value . | |
| Age, mean (SD), y | 11.8 (2.7) | 10.4 (3.7) | .24 |
| Height (mean), cm | 152.3 (16.3) | 141.8 (23.2) | .16 |
| Weight (mean), kg | 43.7 (14.1) | 47.7 (40.1) | .67 |
| Paternal education, mean (SD), y | 17.0 (2.5) | 14.4 (1.7) | .008 |
| Maternal education, mean (SD), y | 16.7 (2.4) | 15.7 (2.8) | .33 |
| Assistance at school through a 504 plan or Individualized Learning Plan, n (%) | 1 (4.3%) | 2 (22%) | ∗χ2 = 2.43, P = .18 |
| Intellectual disability, n (%) | 0 (0%) | 0 (0%) | >.99 |
| Parental SES, n | |||
| Professional degree or college or advanced degree | 19 | 5 | ∗χ2 = 3.94, P = .14 |
| White collar, semiskilled worker, high school education | 4 | 3 | |
| Semiskilled worker/laborer below secondary education | 0 | 1 | |
| Racial identity, n | |||
| White | 22 | 8 | ∗χ2 = .50, P = .48 |
| Other | 1 | 1 | |
| Family history of psychiatric disease, n | 10 | 6 | .25 |
| Fetal hypoxia, n | 5 | 1 | .50 |
| Hemophilia-related variables | |||
| Use of prophylaxis, n (%) | - | 9 (100%) | |
| Age at prophylaxis initiation, mean (median), mo | - | 26 (17) | |
| Annual rate of bleeding, mean (median) | - | 3.6 (2.0) | - |
SD, standard deviation.
χ2 test; values in bold type represent significance at P < .05.