Score | Cross striation | PAS-positive staining | Vacuoles |
---|---|---|---|
 0 | Normal | None | None |
 1 | >75 % normal | Little in most and/or all | Little in all and/or significant in some |
 2 | 25–75 % normal | Significant in all and strong in some; significant and/or strong in most | Significant in all and/or many in some |
 3 | <25 % normal | Very strong in all | Many in all |