African-American women have the highest mortality rate for idiopathic pulmonary arterial hypertension (IPAH), according to new research. The study, presented at CHEST 2006, the 72nd annual international scientific assembly of the American College of Chest Physicians (ACCP), revealed that racial disparities exist in pulmonary hypertension mortality and morbidity, with African-American women exhibiting the highest mortality rate when compared with all other groups.
?Idiopathic pulmonary arterial hypertension, by definition, means that there is no clear attributable cause for this disease,? said study author Kala Davis, MD, Stanford University School of Medicine, Stanford, CA. ?What has become apparent from this and other studies is that we have been operating with a very limited understanding of the epidemiology of IPAH, and that understanding is now changing.”
Dr. Davis and colleagues reviewed data from the United States National Center for Health Statistics from the years 1994 to 1998 for deaths, in which the underlying cause was IPAH. The age, gender, race, and state of residence of the deceased were abstracted, and state-age-gender-race-specific tabulations of deaths, as a result of IPAH, were aggregated into nine geographic regions of the United States, as defined by the Census Bureau. Average, annual, age-adjusted, region-race-gender-specific rates were then calculated.