Contingency format Having decided how to calculate X and the three levels of Y, the only question left is how to present the resulting contingencies. DynRisk offers three alternatives: • % • % difference • Difference If you choose the “%” option the contingencies will be calculated as: Contingency = 100 (X+Y)/X If you choose the “% difference” option the contingencies will be calculated as: Contingency = 100 Y/X If you choose the “Difference” option the contingencies will be calculated as: Contingency = Y