Journal
HYPERTENSION
Volume 39, Issue 2, Pages 203-208Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/hy0202.103439
Keywords
clinical trials; diabetes; obesity; epidemiology
Categories
Funding
- NHLBI NIH HHS [R01-HL24799, R01-HL36820] Funding Source: Medline
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Mexican nationals in Mexico City and Mexican Americans in San Antonio, Tex, have a lower adjusted prevalence of hypertension than San Antonio non-Hispanic whites, especially after adjusting for the greater obesity of San Antonio Mexican Americans. The concomitant examination of a new study from Spain may better explain the association of genetic and environmental factors with hypertension. Three population-based epidemiological studies conducted in Mexico City, Spain, and San Antonio, Tex, were available for comparisons. Hypertension was defined as systolic blood pressure greater than or equal to140 mm Hg, diastolic blood pressure greater than or equal to90 mm Hg, or the use of antihypertensive medications. The prevalence of hypertension was independently associated with age, body mass index, glucose tolerance, and alcohol consumption, with comparable degrees of relationship in all 4 populations. Relative to San Antonio non-Hispanic whites, an excess prevalence of hypertension was observed in Spaniards (odds ratio [OR], 1.53; 95% confidence interval [95% CI], 1.24 to 1.90). A deficit in hypertension prevalence was statistically significant in Mexican nationals (OR, 0.67; 95% CI, 0.53 to 0.85) and close to significance in San Antonio Mexican Americans (OR, 0.86; 95% CI, 0.71 to 1.03). Thus, obesity, educational attainment, type 2 diabetes, glucose tolerance, and marked alcohol consumption (greater than or equal to14 drinks/wk) do not fully explain the increased prevalence of hypertension in Spain and the lower prevalence of hypertension in Mexican-origin populations. Although we cannot conclude definitively that these differences are genetically driven, our results suggest no relationship between Spanish genetic admixture and the deficit in hypertension prevalence in Mexican-origin populations.
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