. Author manuscript; available in PMC: 2014 Jan 26.

Published in final edited form as: J Nucl Cardiol. 2010 Dec 4;18(2):230–237. doi: 10.1007/s12350-010-9323-2

Table 1.

Clinical characteristics of the study cohort dichotomized by achievement of a diagnostic heart rate (≥85% MAPHR)

Characteristic	Entire Cohort (n = 463)	Group 1 ≥85% MAPHR (n = 395)	Group 2 <85% MAPHR (n = 68)	P value^†
Age (median (25th, 75th))	53.5 (46.0, 61.0)	54.0 (46.0, 61.0)	52.5 (47.0, 64.5)	.636
Male (%)	71.7	69.6	82.4	.032
Hypertension (%)	46.1	41.8	70.6	< .001
Hyperlipidemia (%)	56.9	56.5	60.3	.555
Diabetes mellitus (%)	12.8	10.9	23.5	.004
Tobacco use (%)	26.4	23.0	45.6	< .001
Known CAD (%)	22.7	20.0	38.2	.001
History of MI (%)	14.5	11.9	29.4	< .001
Prior revascularization (%)	19.3	16.5	35.3	< .001

CAD, Coronary artery disease; MAPHR, maximum age-predicted heart rate; MI, myocardial infarction.

^†

Values < 0.05 are considered statistically significant.