Thirty-day death or MI was less frequent among patients with non-obstructive CAD ( @ % ) versus obstructive CAD ( @ % ) ( OR ( adj ) @ ; @ % CI , @-@ @ ) ; @-day death or spontaneous MI and six-month mortality were also less frequent among patients with non-obstructive CAD ( OR ( adj ) @ ( @-@ @ ) and @ ( @-@ @ ) , respectively ) .