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Characteristics of Children by ADHD groups
| ADHD n = 29 | Non-ADHD n = 339 | p-valuea | |
|---|---|---|---|
| Age, median (25th–75th percentile) | 8 (7–9) | 7 (6–9) | .003 |
| Gender (male, %) | 19 (66) | 163 (48) | .072 |
| Race (white, %) | 23 (79) | 276 (81) | .780 |
| Previous IV? (yes, %) | (n = 28, 1 missing) | (n = 335, 4 missing) | |
| 24 (86) | 263 (79) | .368 |
aWilcoxon rank sum test and chi-square, as appropriate.
