Table 2.
Patient demographic characteristicsa
| Variable | Retrospective Cohort (N=24) | Prospective Cohort (N=15) |
|---|---|---|
| Age at testing, median (IQR) | 15.1 (12.2-16.9) | 15.8 (14.8-16.5) |
| Gender, (% Women) | 21 (87.5) | 13 (86.7) |
| Ethnicity, (%) | ||
| African-American | 16 (66.7) | 6 (40.0) |
| Hispanicb | 4 (16.7) | 4 (26.6) |
| Asian | 3 (12.5) | 3 (20.0) |
| Caucasian | 1 (4.1) | 1 (6.7) |
| Bi-racial | NONE | 1 (6.7) |
| Patient education, (%) | ||
| High school | 15 (62.5) | 15 (100) |
| 6th-8th grade | 4 (16.6) | NA |
| Elementary school | 5 (20.8) | NA |
| Parental educationc (%) | ||
| Did not graduate high school | 1 (5.3) | 1 (7.1) |
| High school graduate | 7 (36.8) | 5 (35.7) |
| College courses | 4 (21.1) | 3 (21.4) |
| College graduate | 7 (36.8) | 5 (35.7) |
| Median Neighborhood Incomed (IQR) | $41,872 (37,403-60,930) | $33,979 (32,095-38,375) |
| Academic decline (parent report) | 12 (50.0) | NONE |
| Cognitive complaints | 16 (66.7) | NONE |
a
Clinical criteria for neurocognitive testing in the retrospective cohort and inclusion criteria for subjects in the prospective cohort are described in the Patients and Methods section.
b
Six patients were of Mexican descent and 2 patients were of Central American descent.
c
Information not available for 5 families in the retrospective cohort (N=19) and 1 family in prospective group (N=14).
d
Group median neighborhood incomes were statistically lower in the prospective cohort, (p<0.01).