Table 1

Pertinent Characteristics of INVEST Patients at Baseline
Variable N = 22576
Demographic
Age, mean (SD), years 66.1 (9.8)
Women 11770 (52.1)
Race/Ethnicity
White 10925 (48.4)
Black 3029 (13.4)
Hispanic 8045 (35.6)
Other/multiracial 577 (2.6)
Verapamil SR Strategy 11267 (49.9)
Atenolol Strategy 11309 (50.1)
History of
Myocardial infarction 7218 (32.0)
Stroke/transient ischemic attack 1629 (7.2)
Congestive Heart Failure (class I-III) 1256 (5.6)
Diabetes† 6400 (28.4)
Renal impairment‡ 424 (1.9)
Peripheral vascular disease 2699 (12.0)
CABG or PCI 6166 (27.3)
Smoking (ever) 10454 (46.3)
Blood Pressure Systolic Blood Pressure, mean (SD) 149.5 (19.7)
Diastolic Blood Pressure, mean (SD) 86.3 (12.0)
Heart Rate, mean (SD), beats/min 75.5 (9.5)

Abbreviations: SD, Standard deviation; CABG, Coronary artery bypass graft; PCI, percutaneous coronary interventions.

Unless indicated otherwise, values express numbers (percentage).

†History of or currently taking antidiabetic medications.

‡History of or currently have elevated serum creatinine level but less than 4 mg/dl (354 μmol/L).

Gerhard et al.

Gerhard et al. BMC Medical Research Methodology 2012 12:119   doi:10.1186/1471-2288-12-119

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