Key result
African American college students were less likely to be classified as blood pressure dippers compared to whites (41% vs 71%, P<0.01), and poorer sleep quality did not account for these differences.
Why the study?
Does sleep quality account for ethnic differences in nocturnal blood pressure dipping between African American and white college students?
Cross-Sectional (n=89)
Does sleep quality account for ethnic differences in nocturnal blood pressure dipping between African American and white college students?
Absolute Event Rate: 41% vs 71%
p-value: p=<.01
While African American college students exhibit poorer sleep quality and blunted nocturnal blood pressure dipping compared to white students, sleep quality does not fully account for these ethnic differences in BP dipping.
Racial BP dipping differences in young adults persist independent of sleep quality; hypothesis-generating for mechanisms and interventions in hypertension disparities.
BACKGROUND: African Americans exhibit a smaller nocturnal decrease in blood pressure (BP) than whites, and there are also reports of poorer sleep quality among African Americans. We examined the contribution of sleep quality to ethnic differences in BP dipping in African American and white male and female college students. We hypothesized that African Americans would exhibit blunted nocturnal BP dipping compared to whites, which would be partly accounted for by poorer sleep quality among African Americans. METHODS: Forty-three African American and 46 white college students aged 18 to 25 years completed an ambulatory BP protocol that included wrist actigraphy, which was used in conjunction with participant self-reports of sleep times for analyses of sleep quality. RESULTS: Although daytime and night-time BP did not differ according to ethnicity, African Americans had a smaller dip in systolic BP (P < .01), and African American women had a smaller dip in diastolic BP than whites (P < .01). Whites were more likely to be classified as a dipper (71%) than African Americans (41%) (P < .01). African Americans, compared to whites, spent less time in bed, were asleep for a shorter period of time, took longer to fall asleep, exhibited poorer sleep efficiency, and were awakened a higher percentage of the time by the inflation of the BP cuff (F > or = 4.85, P < .05). However, sleep quality did not appear to contribute to ethnic differences in diastolic BP dipping. CONCLUSIONS: Sleep quality accompanied ethnic differences in systolic and diastolic BP dipping, but did not account for these differences.
No takes yet. Share an insight, caveat, or question.
Hughes et al. (2007) conducted a cross-sectional in Blood pressure dipping and sleep quality (n=89). African American ethnicity vs. White ethnicity was evaluated on Blood pressure dipper classification (p=<.01). African American college students were less likely to be classified as blood pressure dippers compared to whites (41% vs 71%, P<0.01), and poorer sleep quality did not account for these differences.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: