In the olive and canola oil groups , post-intervention grading of fatty liver was reduced significantly ( grade I , from @ % to @ % and from @ % to @ % , respectively -LSB- P < @ -RSB- ; grade II , from @ % to @ % and from @ % to @ % , respectively -LSB- P < @ -RSB- ; and grade III , from @ % to none and from @ % to none , respectively ) .