Age, sex, incidence (%), and frequency (No./Pt), for HIF, AMF, SL, and AMF>HIF in the Chiari I and non-Chiari I control groups
| Age (Median) | Sex (F) (%) | HIF (%) | HIF/Pt. | AMF (%) | AMF/Pt. | SL (No.) (%) | AMF>HIF (Mean) | |
|---|---|---|---|---|---|---|---|---|
| Chiari I (n = 25) | 40 | 23 (92%) | 25 (100%) | 8.5a | 24 (96%) | 4.0b | 14c (56%) | 2.2 |
| Control (n = 25) | 40 | 17 (68%) | 24 (96%) | 3.9a | 22 (88%) | 2.7b | 7c (28%) | 1.0 |