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Distribution of children by percentiles of development.
| <5th percentile | 5–15th percentile | 15–50th percentile | ≥50th percentile | Total | |
|---|---|---|---|---|---|
| Sca variant | 1 | 0 | 2 | 2 | 5 |
| Sca control | 4 | 7 | 13 | 27 | 51 |
| Tri variant | 2 | 1 | 4 | 1 | 8 |
| Tri control | 2 | 1 | 6 | 10 | 19 |
Sca scaphocephaly, Tri trigonocephaly.
