Time trends in the US racial difference in hypertension

Area of Science:

• Public Health
• Epidemiology
• Cardiovascular Disease Research

Background:

• Racial disparities in hypertension prevalence and mortality are a significant public health concern in the United States.
• Understanding time trends in these disparities is crucial for targeted interventions.

Purpose of the Study:

• To explore temporal trends in racial differences in hypertension prevalence and mortality in the U.S.
• To investigate the impact of improved hypertension control on these racial disparities.

Main Methods:

• Analysis of mortality data from the National Center for Health Statistics (1940-1978).
• Examination of hypertension prevalence data from multiple large-scale population surveys (NHES, HANES I & II, HDFP, CHEC) spanning 1960-1980.
• Inclusion of individuals on drug therapy as hypertensive to control for differential treatment effects.

Main Results:

• Mortality ratios for hypertension complications showed an increase from 1940-1967, followed by a decrease from 1968-1978.
• Prevalence data revealed a recent decrease in the mean blood pressure difference between Black and White populations.
• Improved hypertension control in Black individuals contributed to some of this observed decrease.

Conclusions:

• Racial disparities in hypertension mortality have shown a decreasing trend in recent decades.
• The black/white ratio in hypertension prevalence may also be declining, potentially influenced by differential changes in treatment.
• Further research is needed to confirm these findings and examine racial patterns in hypertension risk factors over time.