Table 4.

 Univariate analysis of possible predictors of ejection fraction <40%. Values are percentages unless stated otherwise

Variable	LVEF <40%	LVEF ⩾40%	P value
Mean (SD) age (years)	69.6 (9.0)	66.6 (9.7)	0.0049
Mean (SD) height (m)	1.68 (0.09)	1.66 (0.1)	0.15
Mean (SD) weight (kg)	77.9 (14.4)	76.0 (14.2)	0.26
Body mass index >25	70.1	70.2	0.99
Sex (male)	67.8	52.7	0.007
Angina	68.3	46.5	<0.001
Previous myocardial infarction	85.9	30.9	<0.001
Hypertension	45.7	67.5	<0.001
Diabetes	22.4	26.7	0.34
Caucasian	95.4	95.2	0.92
Ever smoked	31.0	37.0	0.27
Current smoker	89.7	78.7	0.047
Current systolic blood pressure >150 mm Hg	40.2	60.4	<0.001
Current diastolic blood pressure >90 mm Hg	20.7	27.3	0.18
Family history myocardial infarction	25.6	29.6	0.45
Family history hypertension	26.7	32.1	0.33
Family history diabetes	23.5	23.3	0.96
Taking antihypertensive drugs	82.8	79.2	0.43

LVEF=left ventricular ejection fraction.