Across the entire sample , the decision to have PCI was strongly correlated with the belief that PCI would prevent MI ( odds ratio , 5.82 [ 95 % CI , 4.13-8 .26 ] ) and that the participant would feel less worried ( odds ratio , 5.36 [ 95 % CI , 3.87-7 .45 ] ) , but was not associated with how much participants were limited by symptoms .