Rule No “IF” Part “Then” part Success ratio %
1 Type of urinary fistula = Absent urethra AND Bladder size = Small Fails (12.0/2.0) 85.71
2 Type of urinary fistula = Combined AND
Status of bladder neck = Partially Damaged AND
Bladder size = Small AND
Length = 5.0 AND
Status of Urethra = Partial Damage
Fails (5.0/1.0) 83.33
Table 39: Classification rules for predicting failure after a surgical repair.