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Table 1: 

Clinical characteristics of the study population
CharacteristicPatients with  Symptoms (%)Patients without  Symptoms (%)PValue
Age (yr)68.3 ± 10.769.4 ± 11.6.521
Male sex52 (77)68 (66).101
Tobacco use32 (48)39 (38).201
Hypertension28 (42)45 (44).807
Diabetes14 (21)20 (19).814
Dyslipidemia41 (61)61 (59).797