No. | Age (yr) | Taper Ratio | SD | |
---|---|---|---|---|
Chiari | 9 | 34 | −0.4 | 0.2 |
Control | 9 | 34 | −0.3 | 0.3 |
Chiari plus syrinx | 12 | 23 | −0.6 | 0.3 |
Control | 12 | 23 | −0.2 | 0.2 |
IS | 7 | 12 | −0.3 | 0.5 |
Control | 7 | 12 | −0.2 | 0.3 |
↵a Two-tailed t test of the means were significant (P = .033) for the Chiari I plus syrinx versus controls; borderline (P = .054) for the Chiari versus controls; and not significant for the IS versus controls.