Table 1

 Characteristics of patients undergoing dobutamine stress echocardiography (DSE)

VariableEarly atropine DSEConventional DSE
⩾70 years (n = 258)<70 years (n = 258)⩾70 years (n = 290)
Data are mean (SD) or number (%) of patients.
*Groups ⩾70 and <70 years old in the early atropine DSE were matched for these clinical characteristics; †p<0.05 between patients ⩾70 and <70 years old in early atropine DSE; ‡p<0.05 between patients ⩾70 years old in early atropine and conventional DSE.
PCI, percutaneous coronary intervention.
Men*107 (39%)107 (39%)140 (48%)
Hypertension175 (68%)183 (71%)157 (54%)
Cigarette smoking25 (10%)56 (22%)†43 (17%)‡
Dyslipidaemia131 (51%)146 (56%)89 (31%)‡
Diabetes mellitus*63 (24)%63 (24)%57 (20%)
Previous myocardial infarction*49 (19%)49 (19%)91(31%)‡
Previous coronary bypass surgery44 (17%)38 (15%)43 (15%)
Previous PCI51 (20%)34 (13%)56 (19%)
Medications
    β Blockers*85 (33%)85 (33%)75 (26%)
    Calcium channel blockers*53 (20%)53 (20%)92 (32%)‡
Left ventricular ejection fraction (%)62 (13)63 (14)59 (13)