| N |  | Aa | Ae | Ho | He | FIS |
---|---|---|---|---|---|---|---|
USA | 213 | Mean | 6.452 | 3.368 | 0.607 | 0.641 | 0.053 |
 |  | SE | 0.431 | 0.226 | 0.026 | 0.026 | 0.008 |
EU | 174 | Mean | 6.262 | 3.089 | 0.624 | 0.638 | 0.020 |
 |  | SE | 0.386 | 0.150 | 0.021 | 0.021 | 0.010 |
Total | 387 | Mean | 7.238 | 3.513 | 0.615 | 0.665 | 0.073 |
 |  | SE | 0.528 | 0.214 | 0.022 | 0.023 | 0.006 |