GPs were less likely to prescribe - blocker ( 95 % vs 97 % , p < 0.01 ) , mineralocorticoid receptor antagonist ( MRA ) ( 56 % vs 64 % , p < 0.001 ) , and loop diuretic ( 61 % vs 64 % , p < 0.05 ) or use PCI ( 33 % vs 44 % , p < 0.001 ) , CABG ( 11 % vs 16 % , p < 0.001 ) , ICD ( 4 % vs 10 % , p < 0.001 ) , or CRT ( 1 % vs 5 % , p < 0.001 ) .