Predictive Probabilities cut offs for binary ourcome

[chuie]

Hi All

I have built a predictive model in sas EM for predicting "no shows". The probability of  high majority of cases  of no show are between 0.57 to 0.68. Based on our business decision we came up with cut offs of 0.57. But I am not convinced to do overbooking   with cases who have just crossed the cut off line like 0.59. 

Isnot  these cases have only 9 % more likely to be no show compared to random 50 50 chance ( like flip of coin)?

Please advise 

Thank you so much

[Ksharp]

IF you are using PROC LOGISTIC . Check options of MODEL.

CTABLE Displays the classification table
PPROB= Specifies probability cutpoints for classification