EBP for ACS was independently associated with male sex ( odds ratio ( OR ) 1.63 , 95 % confidence interval ( CI ) 1.26-2 .11 ) , previous admission for ACS ( OR 1.83 , 95 % CI 1.39-2 .42 ) and diabetes ( OR 1.36 , 95 % CI 1.04-1 .79 ) .