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SWI and IQ or DD/ID characteristics of 18 patients.
| EEG\ID | Normal IQ (0) | Borderline IQ (1) | Mild DD/ID (2) | Moderate to severe DD/ID (3) | Sum |
|---|---|---|---|---|---|
| SWI <50% | 2 | 1 | 0 | 2 | 5 |
| SWI 50–84% | 0 | 1 | 3 | 0 | 4 |
| SWI ≥85% | 1 | 1 | 1 | 6 | 9 |
| Sum | 3 | 3 | 4 | 8 | 18 |
SWI, spike-wave index; IQ, intelligence quotient; DD/ID, developmental delay/intellectual disability.
