recommended change:
1) clarify the guidance to refer to anti-platelet therapy - anti-thrombotic includes both anti-coagulant (e.g. warfarin and heparin) and anti-platelet therapy
2) add reason not given (medical or patient reason) as a numerator exception for anti-platelet therapy
http://www.uptodate.com/contents/antiplatelet-therapy-after-coronary-artery-stenting