Black-White Differences in Ischemic Stroke Risk Factor Burden in Young Adults

Stroke ◽  
2021 ◽  
Author(s):  
Elizabeth M. Aradine ◽  
Kathleen A. Ryan ◽  
Carolyn A. Cronin ◽  
Marcella A. Wozniak ◽  
John W. Cole ◽  
...  
Keyword(s):  
Young Adults ◽  
Ischemic Stroke ◽  
Black Women ◽  
Black Men ◽  
White Women ◽  
Population Attributable Risk ◽  
White Men ◽  
Attributable Risk ◽  
Black Patients ◽  
Population Attributable Risk Percent

Background and Purpose: Although the US Black population has a higher incidence of stroke compared with the US White population, few studies have addressed Black-White differences in the contribution of vascular risk factors to the population burden of ischemic stroke in young adults. Methods: A population-based case-control study of early-onset ischemic stroke, ages 15 to 49 years, was conducted in the Baltimore-Washington DC region between 1992 and 2007. Risk factor data was obtained by in-person interview in both cases and controls. The prevalence, odds ratio, and population-attributable risk percent (PAR%) of smoking, diabetes, and hypertension was determined among Black patients and White patients, stratified by sex. Results: The study included 1044 cases and 1099 controls. Of the cases, 47% were Black patients, 54% were men, and the mean (±SD) age was 41.0 (±6.8) years. For smoking, the population-attributable risk percent were White men 19.7%, White women 32.5%, Black men 10.1%, and Black women 23.8%. For diabetes, the population-attributable risk percent were White men 10.5%, White women 7.4%, Black men 17.2%, and Black women 13.4%. For hypertension, the population-attributable risk percent were White men 17.2%, White women 19.3%, Black men 45.8%, and Black women 26.4%. Conclusions: Modifiable vascular risk factors account for a large proportion of ischemic stroke in young adults. Cigarette smoking was the strongest contributor to stroke among White patients while hypertension was the strongest contributor to stroke among Black patients. These results support early primary prevention efforts focused on smoking cessation and hypertension detection and treatment.

Abstract P257: The Association of Metabolic Risk and Physical Activity Trajectories: CARDIA

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Sarah M Camhi ◽  
Peter T Katzmarzyk ◽  
Stephanie Broyles ◽  
Timothy S Church ◽  
Arlene L Hankinson ◽  
...  
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Black Women ◽  
Black Men ◽  
Repeated Measures ◽  
White Women ◽  
Smoking Status ◽  
White Men ◽  
Metabolic Risk ◽  
Linear Modeling

Purpose: To determine whether baseline metabolic risk in young adults is associated with physical activity (PA) trajectories over 20 years. Methods: The sample included young adults from the Coronary Artery Risk Development in Young Adults (CARDIA) study, baseline ages 18–30 years (n= 4161). PA was determined from self-reported questionnaire at baseline and at years 2,5,7,10,15 and 20 of follow-up. Baseline metabolic risk was calculated using age-adjusted principal components analysis (elevated=top 10% of first factor), within sex-by-race groups, from mean arterial pressure (1/3(SBP-DBP)+DBP), glucose, waist circumference, triglycerides, and high-density lipoprotein cholesterol. Repeated measures general linear modeling was used to generate PA trajectories over 20 years, separately in black men, white men, black women and white women, adjusting for age and smoking status. Time by metabolic risk interaction terms did not contribute significantly to any model for any sex-by-race group and were therefore not included in final models. Results: In black men, white men, and white women, PA (in exercise units) at baseline was significantly lower among those with elevated metabolic risk (elevated risk vs. normal risk: black men 473.0 ± 27.0 vs. 572.0 ± 22.7; white men: 498.0 ±20.6 vs. 568.7 ± 17.3; white women: 402.4 ± 17.0 vs. 481.1 ± 14.3), and these differences persisted over 20 years (black men: −98.9 ± 16.4, white men: −70.8 ± 12.5 , white women: −78.7 ± 10.2; all p<0.0001). There were no significant differences in PA by metabolic risk in black women (307.2 ± 15.5 vs. 317.4 ± 13.1, difference: −10.1 ± 9.3, p =0.27). Conclusion: Elevated metabolic risk is associated with lower levels of PA in early adulthood, and these differences persist over 20 years. Despite these lower levels at baseline, the PA trajectory declines at similar rates for those with and without elevated metabolic risk. Young adults with elevated metabolic risk are important to identify early, in order to prevent PA level gap which remains over 20 years between those with and without elevated metabolic risk.

Elevated Fibrinogen Predicts Atherosclerosis.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 3188-3188
Author(s):  
David Green ◽  
Nancy Foiles ◽  
Cheeling Chan ◽  
Pamela J. Schreiner ◽  
David Jacobs ◽  
...  
Keyword(s):  
Young Adults ◽  
Coronary Artery ◽  
Black Women ◽  
Black Men ◽  
White Women ◽  
Multivariable Analysis ◽  
White Men ◽  
Race And Gender ◽  
Hemostatic Factors ◽  
And Gender

Abstract Elevated levels of hemostatic factors are observed in patients with atherosclerosis, but whether they promote plaque formation or are a consequence of the disease is uncertain. To examine this issue, we used data from a large biracial cohort of young adults (Coronary Artery Risk Development in Young Adults [CARDIA]) followed up for 13 years, to examine the relationships of hemostatic factors - fibrinogen, factors VII and VIII, and von Willebrand factor (vWF) - with coronary artery calcium (CAC) and carotid intimal-medial thickness (IMT). Complete data were available on 1382 participants, whose mean age was 32 years at enrollment. The age, race, and gender-adjusted prevalence of CAC for increasing quartiles of fibrinogen levels was: 14.0%, 15.0%, 19.6%, and 28.4% (p <0.001 for trend). After further adjustment for BMI, smoking, systolic BP, and total cholesterol, the prevalence of CAC for increasing quartiles of fibrinogen was 15.5%, 16.0%, 19.0%, and 26.4% (p <0.001 for trend). Similar trends were observed for IMT (age, race, and gender-adjusted, p<0.001; multivariable adjusted, p=0.022). When race and gender subgroups were further analyzed, the prevalence of CAC was associated with fibrinogen levels in women and white men after age adjustment, and in women on multivariable analysis. IMT scores adjusted for age were associated with elevated fibrinogen levels in all except black men, and in black women after multivariable adjustment (p=0.003). While the prevalence of CAC was not associated with increasing quartiles of FVII, FVIII, or vWF, IMT scores were associated with elevated FVII on multivariable analysis in white women (p=0.006) and with vWF antigen in white men on age-adjusted (p=0.004) and multivariable analysis (p=0.013). There were no significant associations of hemostatic factors with either the prevalence of CAC or IMT in black men. Participants were categorized as to whether they had 0, 1, or more than 1 hemostatic factors in the highest quartile. After adjustment for age, race, and gender, hemostatic group classification was associated linearly with the prevalence of CAC (p<0.001 for trend) and IMT score (p=0.01 for trend). In conclusion, the main finding from this study is that elevated levels of fibrinogen in persons aged 25 to 37 are associated with the later appearance of subclinical markers of cardiovascular disease. These associations were observed in whites and black women, but not black men. We suggest that atherosclerosis became established during the 13 year observation period, and that increased fibrinogen may have been a contributing factor or a marker for disease development.

Abstract 10: Metabolically Healthy Obesity Over 25 Years in the Coronary Artery Risk Development in Young Adults (CARDIA) Study: Race and Sex Differences

Circulation ◽  
2017 ◽  
Vol 135 (suppl_1) ◽  
Author(s):  
Sarah M Camhi ◽  
Aviva Must ◽  
Philimon N Gona ◽  
Arlene Hankinson ◽  
Andrew Odegaard ◽  
...  
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Black Women ◽  
Black Men ◽  
White Women ◽  
White Men ◽  
Time Points ◽  
Metabolically Healthy ◽  
Baseline Bmi

Background: Obesity is heterogeneous condition with phenotypic variation. Metabolically healthy obese (MHO) may represent an unstable phenotype which changes over time. MHO duration, or the length of time in MHO, is not well characterized. The purpose is to quantify MHO duration over 25 years and explore possible race/sex differences. Methods: Young adults (baseline ages 18-30 yrs) from CARDIA were included if they were non-obese at baseline, developed obesity (BMI ≥30kg/m 2 ) at any follow-up exam (yrs 7, 10, 15, 20 and 25), and had complete data for metabolic status, age, race and sex (n=702). MHO was defined as obese (BMI ≥30 kg/m 2 ) and having either 0 or 1 risk factor of the following: ≥SBP/DBP 130/85 mmHg; glucose ≥100 mg/dL; triglycerides (≥150 mg/dL); and HDL-C (men <40, women <50 mg/dL). Obese individuals with ≥2 risk factors were classified as metabolically unhealthy obese (MUO). MHO duration (yrs) and obesity duration (yrs) were estimated for subsequent time-points; and a duration sum was calculated for the follow-up period. For two time-points in which a person remained MHO and obese, a duration for that period was assigned. If they transitioned to MUO or non-obese, then the midpoint of the time period was estimated as MHO duration (yrs). MHO duration was also expressed as the percentage (%) of the total obesity duration. Multivariable adjusted ANCOVA was used to compare MHO duration (%) between race and sex groups (black men, white men, black women and white women), adjusting for baseline age, baseline BMI status (normal weight or overweight). Results: The eligible CARDIA sample was 55% black, 71% women and had a mean (± SD) baseline age of 25.0 ± 3.7 yrs. Duration of obesity was 12.3 ± 6.8 yrs, MHO duration (yrs) was 6.2 ± 5.4 yrs (range: 0 years to 19 yrs), and MHO duration (%) was 51.9 ± 34.8%. After adjusting for age and baseline BMI, MHO duration (%, mean ± SE) was significantly higher in women compared to men within race (black women n=292: 56.3 ± 2.0% vs. black men n=91: 43.3 ± 3.6%, p=0.001; white women n=206: 56.1 ± 2.4% vs. white men n=113: 39.7 ± 3.2%, p <0.0001). No significant differences were found between race groups within gender (black men vs. white men or black women vs. white women). Conclusion: MHO status is a transient phenotype accounting for only approximately half of obesity duration. Women have longer MHO duration compared to men, but differences by race were not apparent. Future research is needed to explore possible modifiable predictors and/or determinants of longer MHO duration in order to maintain a healthy cardiometabolic phenotype, even in the presence of obesity.

Abstract 131: Racial Differences in Nocturnal Hypertension and Non-dipping Blood Pressure: The Coronary Artery Risk Development in Young Adults (CARDIA) Study

Hypertension ◽  
2017 ◽  
Vol 70 (suppl_1) ◽  
Author(s):  
Paul Muntner ◽  
John N Booth ◽  
Stephen J Thomas ◽  
Luqin Deng ◽  
Joseph E Schwartz ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Young Adults ◽  
Coronary Artery ◽  
Black Women ◽  
Black Men ◽  
White Women ◽  
White Men ◽  
Self Report ◽  
Nocturnal Hypertension ◽  
Multivariable Adjustment

Risk factors for nocturnal hypertension are more common among blacks compared with whites. We hypothesized nocturnal hypertension and nocturnal non-dipping BP are more common among blacks compared with whites. We analyzed data for 781 participants of the population-based Coronary Artery Risk Development in Young Adults (CARDIA) study who completed ambulatory blood pressure (BP) monitoring (ABPM) in 2015-2016. Awake and sleep periods were defined using actigraphy and self-report. Nocturnal hypertension was defined as mean sleep systolic BP (SBP)/diastolic BP (DBP) ≥ 120/70 mm Hg. Non-dipping SBP and DBP, separately, were defined as a decline in mean sleep BP, relative to mean awake BP < 10%. The mean age of participants was 54.7 years, 21.1% were white women, 38.5% were black women, 16.8% were white men and 23.6% were black men. The prevalence of nocturnal hypertension was 18.2% and 44.5% among white and black women, respectively, and 35.9% and 59.8% among white and black men, respectively. After multivariable adjustment, the prevalence of nocturnal hypertension was higher among black women, white men and black men, each compared with white women (Table). The prevalence of non-dipping SBP was 21.2% and 40.9% among white and black women, respectively, and 19.8% and 37.5% among white and black men, respectively. After multivariable adjustment, non-dipping SBP was more common among black women and black men compared with white women. There were no statistically significant differences in non-dipping DBP across race-gender after multivariable adjustment. Nocturnal hypertension and non-dipping SBP are more common among blacks compared with whites even after adjustment for mean BP.

Abstract MP050: Race and Gender Group Specific Trends in Length of Stay for Acute Myocardial Infarction: The Atherosclerosis Risk in Communities (ARIC) study, 1987–2008

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Laura R Loehr ◽  
Xiaoxi Liu ◽  
C. Baggett ◽  
Cameron Guild ◽  
Erin D Michos ◽  
...  
Keyword(s):  
Black Women ◽  
Length Of Stay ◽  
Black Men ◽  
White Women ◽  
White Men ◽  
Quadratic Term ◽  
Race And Gender ◽  
Insurance Type ◽  
And Gender ◽  
Aric Study

Introduction: Since the 1980’s, length of stay (LOS) for acute MI (AMI) has declined in the US. However, little is known about trends in LOS for non-white racial groups and whether change in LOS is related to insurance type or hospital complications. Methods: We determined 22 year trends in LOS for nonfatal (definite or probable) AMI among black and white residents age 35–74 in 4 US communities (N=396,514 in 2008 population) under surveillance in the ARIC Study. Events were randomly sampled and independently validated using a standardized algorithm. All analyses accounted for sampling scheme. We excluded MI events which started after admission (n=1,677), events within 28 days for the same person (n=3,817), hospital transfers (n=571), and those with LOS=0 or LOS >66 (top 0.5% of distribution, N= 144) leaving 22,258 weighted events for analysis. The average annual change in log LOS was modeled using weighted linear regression with year as a quadratic term. All models adjusted for age and secondary models adjusted for insurance type (Medicare, Medicaid, private, or other), and complications during admission (cardiac arrest, cardiogenic shock, or heart failure). Results: The average age-adjusted LOS from 1987 to 2008 was reduced by 5 days in black men (9.5 to 4.5 days); 4.6 days in white women (9.4 to 4.8 days); 4 days in white men (8.3 to 4.3 days) and 3.6 days in black women (9.0 to 5.4 days). Between 1987 and 2008, the age-adjusted average annual percent change (with 95% CI) in LOS was largest for white men at −4.40 percent per year (−4.91, −3.89) followed by −3.89 percent (−4.52, −3.26) for white women, −3.72 percent (−4.46, −2.89) for black men, and −2.94 percent (−3.92, −1.96) for black women (see Figure). Adjustment for insurance type, and complications did not change the pattern by race and gender. Conclusions: Between 1987 and 2008, LOS for AMI declined significantly and similarly in men and women, blacks and whites. These changes appear independent of differences in insurance type and hospital complications among race-gender groups.

Abstract WMP53: Traditional Vascular Risk Factors Account for Different Proportions of Ischemic Stroke Within Different Gender and Race Groups

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Elizabeth M Aradine ◽  
Yan Hou ◽  
Kathleen A Ryan ◽  
Prachi Mehndiratta ◽  
Michael S Phipps ◽  
...  
Keyword(s):  
Risk Factors ◽  
Young Adults ◽  
Ischemic Stroke ◽  
Black Men ◽  
White Men ◽  
Vascular Risk Factors ◽  
Vascular Risk ◽  
Odds Ratios ◽  
Stroke In Young Adults ◽  
Stroke In Young

Introduction: Few studies have compared the proportion of ischemic strokes attributable to traditional vascular risk factors (population-attributable risk percent or PAR%) between genders and races. The PAR% is a function of the population prevalence and strength of association of a risk factor. Methods: A population-based case-control study of ischemic stroke in young adults ages 18-49 in the Baltimore-Washington region was used to study the prevalence, odds ratios, and PAR% of hypertension, diabetes, and smoking among blacks and whites. Logistic regression was used to calculate age-adjusted odds ratios. All analyses were stratified by gender. Results: There were 1044 cases and 1099 controls. Of the cases, 47% were black, 54% were women. Roughly a quarter to a third of all strokes in women were attributable to smoking. Due to the higher prevalence of hypertension and a higher odds ratio for hypertension in black men (OR 3.9, 95% CI 2.6-5.9) compared to white men (OR 1.8, 95% CI 1.3-2.6), there was a much higher PAR% for hypertension among black men than white men. See Table 1 for prevalence and Table 2 for PAR% stratified by gender and race. Conclusion: Traditional vascular risk factors have the potential to explain a high proportion of ischemic stroke in young adults. The high proportion of strokes in women attributable to smoking underscores the need for targeted smoking cessation interventions in this population. Diabetes and, especially, hypertension are important contributors to the excess population burden of ischemic stroke among blacks. These findings support the value of early screening and treatment for hypertension in young blacks.

Abstract MP32: Race-sex differences in hyperlipidemia awareness, treatment and control in the Reasons for Geographic And Racial Differences in Stroke (REGARDS) study

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Monika M Safford ◽  
Paul Muntner ◽  
Raegan Durant ◽  
Stephen Glasser ◽  
Christopher Gamboa ◽  
...  
Keyword(s):  
Sex Differences ◽  
Black Women ◽  
Black Men ◽  
Racial Differences ◽  
White Women ◽  
White Men ◽  
Risk Category ◽  
Chd Risk ◽  
And Control ◽  
Risk Categories

Introduction: To identify potential targets for eliminating disparities in cardiovascular disease outcomes, we examined race-sex differences in awareness, treatment and control of hyperlipidemia in the REGARDS cohort. Methods: REGARDS recruited 30,239 blacks and whites aged ≥45 residing in the 48 continental US between 2003-7. Baseline data were collected via telephone interviews followed by in-home visits. We categorized participants into coronary heart disease (CHD) risk groups (CHD or risk equivalent [highest risk]; Framingham Coronary Risk Score [FRS] >20%; FRS 10-20%; FRS <10%) following the 3 rd Adult Treatment Panel. Prevalence, awareness, treatment and control of hyperlipidemia were described across risk categories and race-sex groups. Multivariable models examined associations for hyperlipidemia awareness, treatment and control between race-sex groups compared with white men, adjusting for predisposing, enabling and need factors. Results: There were 11,677 individuals at highest risk, 847 with FRS >20%, 5791 with FRS 10-20%, and 10,900 with FRS<10%; 43% of white men, 29% of white women, 49% of black men and 43% of black women were in the highest risk category. More high risk whites than blacks were aware of their hyperlipidemia but treatment was 10-17% less common and control was 5-49% less common among race-sex groups compared with white men across risk categories. After multivariable adjustment, all race-sex groups relative to white men were significantly less likely to be treated or controlled, with the greatest differences for black women vs. white men (Table). Results were similar when stratified on CHD risk and area-level poverty tertile. Conclusion: Compared to white men at similar CHD risk, fewer white women, black men and especially black women who were aware of their hyperlipidemia were treated and when treated, they were less likely to achieve control, even after adjusting for factors that influence health services utilization.

scholarly journals Inequalities in Hypertension and Diabetes in Canada: Intersections between Racial Identity, Gender, and Income

2017 ◽  
Vol 27 (4) ◽  
pp. 371 ◽  
Author(s):  
Thierry Gagné ◽  
Gerry Veenstra
Keyword(s):  
Racial Identity ◽  
Black Women ◽  
Black Men ◽  
White Women ◽  
White Men ◽  
Canadian Community Health Survey ◽  
The United States ◽  
Unequal Distribution ◽  
Community Health Survey ◽  
Using Data

<p>A growing body of research from the United States informed by intersectionality theory indicates that racial identity, gender, and income are often entwined with one another as determinants of health in unexpectedly complex ways. Research of this kind from Canada is scarce, however. Using data pooled from ten cycles (2001- 2013) of the Canadian Community Health Survey, we regressed hypertension (HT) and diabetes (DM) on income in subsamples of Black women (n = 3,506), White women (n = 336,341), Black men (n = 2,806) and White men (n = 271,260). An increase of one decile in income was associated with lower odds of hypertension and diabetes among White men (ORHT = .98, 95% CI (.97, .99); ORDM = .93, 95% CI (.92, .94)) and White women (ORHT = .95, 95% CI (.95, .96); ORDM = .90, 95% CI (.89, .91)). In contrast, an increase of one decile in income was not associated with either health outcome among Black men (ORHT = .99, 95% CI (.92, 1.06); ORDM = .99, 95% CI (.91, 1.08)) and strongly associated with both outcomes among Black women (ORHT = .86, 95% CI (.80, .92); ORDM = .83, 95% CI (.75, .92)). Our findings highlight the complexity of the unequal distribution of hypertension and diabetes, which includes inordinately high risks of both outcomes for poor Black women and an absence of associations between income and both outcomes for Black men in Canada. These results suggest that an intersectionality framework can contribute to uncovering health inequalities in Canada.</p><p><em>Ethn Dis.</em>2017;27(4):371-378; doi:10.18865/ ed.27.4.371. </p>

scholarly journals Identity and the Legislative Decision Making Process: A Case Study of the Maryland State Legislature

2011 ◽  
Vol 34 (1) ◽  
pp. 45-68 ◽  
Author(s):  
Nadia Brown
Keyword(s):  
Decision Making ◽  
Black Women ◽  
African American Women ◽  
Black Men ◽  
White Women ◽  
White Men ◽  
State Legislature ◽  
Men And Women ◽  
Women Legislators ◽  
Men I

Both politicians and the mass public believe that identity influences political behavior yet, political scientists have failed to fully detail how identity is salient for all political actors not just minorities and women legislators. To what extent do racial, gendered, and race/gendered identities affect the legislation decision process? To test this proposition, I examine how race and gender based identities shape the legislative decisions of Black women in comparison to White men, White women, and Black men. I find that Black men and women legislators interviewed believe that racial identity is relevant in their decision making processes, while White men and women members of the Maryland state legislature had difficulty deciding whether their identities mattered and had even more trouble articulating how or why they did. African American women legislators in Maryland articulate or describe an intersectional identity as a meaningful and significant component of their work as representatives. More specifically, Black women legislators use their identity to interpret legislation differently due to their race/gender identities.

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