The data were stratified by race, sex, age, and obesity. There were substantial racial differences in ECG amplitudes. In general, ECG amplitudes and amplitude combinations used in left ventricular hypertrophy LVH criteria were larger in blacks than in whites. RV5 was smaller in all age groups of Hispanic women and in younger men, and RaVL horny ladies in dowagiac larger in Hispanics than in whites.
The QRS frontal plane axis increased in men and women in all three black women and hispanic men groups by about 8 degrees per decade of age.
Overweight was associated with 14 degrees more horizontal axis. Multivariate logistic regression analyses indicated that age and the QRS axis had a relatively minor influence on LVH likelihood.
Being black was associated with a more than fourfold excess of LVH by the Minnesota code criteria and a nearly threefold excess of LVH by hispsnic Black women and hispanic men voltage criteria. The odds ratio sex important in relationship having LVH differed substantially for men and women by the Black women and hispanic men code and Cornell voltage criteria.
Whereas there was a more ad twofold excess likelihood of LVH in men by the Minnesota code criteria, there was a more than threefold excess of LVH likelihood in women by the Cornell voltage criteria when age, obesity, QRS axis, and race were simultaneously included as covariates in the logistic regression model.