Using Boey scoring system, there were 86.1% and 12.5% of cases classified as Boey 0 and Boey 1 while there were no Boey 2 and 3 cases.
Chỉ số Boey 0 chiếm 86,1%, Boey 1 chiếm 13,9%, không có Boey 2 và 3.