The most common Modified Frailty Index comorbidities include hypertension requiring medication and history of diabetes requiring treatment with oral antihyperglycemics or insulin. CABG indicates coronary artery bypass graft; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; MI, myocardial infraction; PCI, percutaneous coronary intervention; and TIA, transient ischemic attack.