Comparison of dyskinetic and spastic CP groupsa
| Variable | Dyskinetic CP (n = 20) | Spastic CP (n = 20) | P Value |
|---|---|---|---|
| Age at time of MR imaging (yr) | 4.8 ± 3.7 | 6.0 ± 3.9 | .35 |
| Gestational age (wk) | 40.0 ± 1.3 | 39.1 ± 2.0 | .12 |
| Birth weight (kg) | 3.3 ± 0.5 | 3.3 ± 0.6 | .78 |
| Apgar score (5-minute) | 3 (1–7) | 4 (0–6) | .27 |
| Cord blood pH at birth | 6.92 ± 0.15 | 6.83 ± 0.20 | .18 |
| Head circumference (percentile) | 53.5 ± 26.0 | 35.4 ± 20.5 | .02b |
| Age at onset of seizures (hr) | 3 (1–14) | 3.5 (1–18) | .17 |
| Putaminal injury score (0–3) | |||
| Left | 2 (1–3) | 1.5 (0–3) | .72 |
| Right | 1 (0–2) | 1 (0–3) | .78 |
| Thalamic injury score (0–3) | |||
| Left | 1 (1–3) | 1.5 (0–3) | .84 |
| Right | 1 (1–3) | 1 (0–3) | .64 |
| PCWM severity score (0–3) | |||
| Left | 1 (0–2) | 2 (1–3) | .01b |
| Right | 1 (0–2) | 2 (0–3 | .07 |
| Total injury score (0–18) | 8.0 (4–14) | 9.5 (4–18) | .38 |
| STN injury (No.) (%) | 15 (75) | 6 (30) | .01b |
| Caudate injury (No.) (%) | 2 (10) | 8 (40) | .06 |
| GP injury (No.) (%) | 2 (10) | 6 (30) | .24 |
a Groups were compared by the Student t-test. All scores and age at onset of seizures are expressed as medians with ranges in parentheses and are compared by the Wilcoxon rank-sum test. The proportion of patients in each group with STN, caudate, and GP injuries was evaluated by the Fisher exact test.
b Statistically significant, P < .05.