A latest study published in the Journal of Clinical
Sleep Medicine states that obstructive sleep apnea is influenced by race.
According to the study, obstructive sleep apnea is
high in African American men of a certain age range. The study was led by James
Rowley, PhD, the study's senior investigator, professor of medicine at Wayne
State University School of Medicine in Detroit and Medical Director of the
Detroit Receiving Hospital Sleep Disorders Center.
"The results show that in certain age groups,
after correcting for other demographic factors, the severity of sleep apnea as
measured by the apnea-hypopnea index is higher in African-American males than
Caucasian males," Rowley was quoted as saying in Eurekalert.
Based on the results of th
Based on the results of the multivariate linear
regression model, African American men who belong to the age group of less than
40 have a greater apnea-hypopnea index. It is high, with 3.21 breathing pauses
per hour of sleep when compared to a white man belonging to the same age group
and same BMI.
For those men who belonged to the age grouo 50-59, the
African American had high a AHI (apnea-hypopnea index) of 2.79 breathing per
hour of sleep. The same was absent in African American and white women.
The study was based on data collected from 512
patients. These patients studied in sleep centers between 1996-1999. For the
study it was required that the patients were more than 18 years and should have
an AHI of more than 5 pauses per hour of sleep. Along with this, they must have
a full night polysomnogram.
In order to track the relation between race and AHI,
researchers conducted a statistical analysis. There were nearly 340 African
American and 172 Caucasian patients.
The authors don't have a clear explanation for the
mechanism that is responsible for the difference in sleep apnea severity.
They predict that it could be the anatomic difference
that causes this difference,
from science world report
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