Table 1.
Characteristics of study participants (N=340) at time of first executive function testing
| Characteristic | % (n) or Median [IQR] |
|---|---|
|
| |
| Age, years | 13 [10, 17] |
|
| |
| Male | 61% (206) |
|
| |
| African-American | 17% (57) |
|
| |
| Maternal Education | |
| High school or less | 41% (136) |
| Some college | 28% (91) |
| College or more | 31% (103) |
|
| |
| Household Income | |
| <$36,000/year | 38% (127) |
| ≥$36,000/year | 62% (204) |
|
| |
| IQ < 85 | 22% (73) |
|
| |
| Elevated Blood Pressurea | 26% (78) |
|
| |
| Premature Birth | 12% (37) |
|
| |
| Urine Protein:Creatinine ≥ 2 | 12% (38) |
|
| |
| Duration of CKD, years | 10 [6, 13] |
|
| |
| eGFR, ml/min|1.73m2 | 43 [31, 53] |
|
| |
| D-KEFS Total Achievement | 10 [8, 11] |
|
| |
| Digit Span Backward | 9 [7, 11] |
|
| |
| CPT-II Errors of Commission | 54 [44, 60] |
|
| |
| CPT-II Hit Reaction Time | 47 [40, 54] |
|
| |
| CPT-II Variability | 49 [43, 59] |
a
Defined as systolic or diastolic blood pressure ≥90th percentile for age, sex and height.