RESULTS	Seven variables were identified as independent correlates of major bleeding ( age > 55 years , female gender , estimated glomerular filtration rate < 60 mL/min/1 .73 m ( 2 ) , pre-existing anaemia , administration of low-molecular-weight heparin within 48 h pre-PCI , use of glycoprotein IIb/IIIa inhibitors , and intraaortic balloon pump use ) .\