ETHNIC-DIFFERENCES IN ELECTROCARDIOGRAPHIC LEFT-VENTRICULAR HYPERTROPHY IN YOUNG AND MIDDLE-AGED EMPLOYED AMERICAN MEN

Citation
Xy. Xie et al., ETHNIC-DIFFERENCES IN ELECTROCARDIOGRAPHIC LEFT-VENTRICULAR HYPERTROPHY IN YOUNG AND MIDDLE-AGED EMPLOYED AMERICAN MEN, The American journal of cardiology, 73(8), 1994, pp. 564-567
Citations number
22
Categorie Soggetti
Cardiac & Cardiovascular System
ISSN journal
00029149
Volume
73
Issue
8
Year of publication
1994
Pages
564 - 567
Database
ISI
SICI code
0002-9149(1994)73:8<564:EIELH>2.0.ZU;2-M
Abstract
In the United States population, black men have higher prevalence rate s of electrocardiographic (ECG) high QRS voltage, more ST-segment and T-wave abnormalities, and more ECG left ventricular hypertrophy (LVH) than do white men. Reasons for these differences have not been fully e lucidated. The prevalence rate of ECG LVH and associated characteristi cs were compared in black and white men in the Chicago Heart Associati on Detection Project in Industry population study. Data were from 1,39 1 black men and 19,126 white men (age range 20 to 64 years) employed b y 84 Chicago organizations. ECG LVH was defined by the presence of bot h high QRS (Minnesota code 3.3) and ST-T abnormality (code 4.1-4.3 or 5.1-5.3). Black men had a significantly higher prevalence rate of ECG LVH than did white men in each 15-year age group (15.9 vs 2.4, 14.6 vs 2.8, and 35.7 vs 12.5/1,000 in the 20- to 34-, 35- to 49-, and 50- to 64-year age groups, respectively; p <0.01 for each comparison). Multi ple logistic regression analyses indicated that systolic blood pressur e and age were associated positively with ECG LVH (p <0.01) in both bl ack and white men. Men with history of hypertension and receiving drug treatment had a greater likelihood of having ECG LVH than did those w ith history of hypertension but not receiving drug treatment, possibly because those with more severe hypertension were more likely to have been prescribed medication. Serum cholesterol, cigarettes smoked/day, 1-hour post-load plasma glucose and education were not consistently re lated to ECG LVH. After adjustment for all possible risk factors, the black-white difference in LVH prevalence rates remained significant (p <0.001). Thus, this difference was only partly explained by racial di fferences in the distribution of blood pressure and other cardiovascul ar risk factors.