“…To determine which clinical variables were the most significant independent predictors of depressive symptoms, a backward elimination linear regression model was performed. Variables associated with depression or depressive symptoms in previous studies of patients with CAD were entered into the model including the sociodemographic characteristics age, sex, smoking status and marital status, the anthropometric characteristics BMI and WHtR, resting physiology including heart rate, systolic and diastolic blood pressure, and cardiopulmonary fitness parameters, including VO 2 peak, maximum heart rate, and maximum systolic and diastolic blood pressures (4)(5)(6)(7)(8)(17)(18)(19)(20). Cardiac factors, including history of MI, PCI, CABG, congestive heart failure and cardiac arrest, and the presence of hypertension and angina pectoris, and the medical co-morbidities diabetes, COPD, cancer, renal disease and stroke that have been previously associated with depression or depressive symptoms were also entered (5,21).…”