Faculty Bibliography

Background: In the United States, 40% of African Americans are disproportionately affected by hypertension leading to severe comorbidity and eventual mortality. Ethnic differences in hypertension among the various African American groups are not well documented. We evaluated the blood pressure control rates of Caribbean and West African born African Americans compared to US born African Americans attending New York City Health and Hospitals Corporation (NYC HHC) facilities. Methods: Data from NYC HHC clinical data warehouse were extracted for hypertensive patients seen between January 2004 and December 2009. Ethnic origin was based on self-reported country of birth (United States, the Caribbean, and West Africa). Blood pressure (BP) was scored by taking the average of 3 or more blood pressure measurements over the course of 3 months of HHC data. All BP measurements were made in the clinical setting and uncontrolled hypertension was defined as BP >140/90 mm Hg. All BPs were measured at least 4 months after hypertension diagnosis. We also extracted information regarding comorbid diagnoses, number of prescribed antihypertensive classes, number of medical visits, age, sex, BMI and mortality. We compared the groups using cox proportional hazard regression models. Results: The sample was composed of 25,142 African Americans of whom 13,778 (54.8%) were US born, 10,032 (39.9%) were Caribbean born, and 1,332 (5.3%) were West African born. The mean sample age was 51 (14.2) years, the mean BMI was 32.4 (11.0) and the sample was 61.4% (N=15,449) female. Compared to US born African Americans, Caribbean and West African born African Americans had higher levels of systolic blood pressure (3.8mmHg; p<.001 and 2.4mmHg; p<.001 respectively) and were more likely to have uncontrolled BP (OR=1.40;p<.001 and OR=1.21;p=.002, respectively). These differences were found in unadjusted models and after adjustment for age, sex, BMI, number of classes of antihypertensive medications prescribed, comorbidity, number of BP measurements, and length of HTN diagnosis. However, US born African Americans had higher rates of mortality (11.6%) compared to Caribbean born (6.0%) and West African born (2.5%) African Americans, which was confirmed by unadjusted and fully adjusted cox proportional hazards regression models. Conclusion: Ethnic differences in cardiovascular outcomes and mortality exist among hypertensive African Americans served by NYC HHC. US born African Americans have a lower survival rate despite lower BP and better BP control than Caribbean and West African born African Americans. Future studies on African Americans should take ethnic variations within these populations into account

Background: The racial/ethnic differences in post-stroke blood pressure (BP) trajectory and mortality risk are not fully understood. The current paper investigated differences in average systolic BP (SBP) during the 6 months following stroke and effects of average post-stroke BP on mortality risk among Blacks and Hispanics. Hypothesis: Greater post-stroke BP levels will increase risk of mortality Methods:We examined BP measurements in 6,016 stroke survivors within the New York City Health and Hospitals Corporation (NYC HHC) during the 6 months following stroke. Based on the average of all SBP measurements in this period, patients were classified into three groups: (1) SBP =140 mm Hg and =150 mm Hg. We used inverse probability weighting (IPW) to control for group differences in demographic factors, comorbidity, and anti-hypertensive medication use. We examined whether 6 month SBP average was related to mortality following stroke, using Cox regression analysis. The mean duration of follow up after stroke was 2.6+/-1.5 years. Results: The mean age was 57.9+/-13.0 years, 57.4% of patients were female, 49.1% were Black and 37.3% were Hispanic. Blacks were more likely than Hispanics to have an average post-stroke SBP >=150mm Hg (27% versus 17%). Group 1 (SBP <140) and Group 3 (SBP>=150) had higher risks of mortality (Group 1 HR=1.26, 95%CI=1.13-1.41; Group 3 HR=1.29, 95%CI=1.13-1.48) when compared to Group 2 (SBP 140-150). When controlling for ethnicity, these differences are no longer significant. In stratified analyses, the increased hazard in Group 1 was maintained in the sub-sample of Blacks (HR=1.47, 95%CI=1.25-1.72) but not in Hispanics (HR=0.95, 95%CI=0.79-1.15). The difference between Group 2 and Group 3 was not significant in either Black or Hispanic sub-samples. Conclusion: Our findings demonstrate that having a post-stroke SBP below 140 mm Hg or above 150 mm Hg significantly increased individuals' mortality risk, adjusting for demographic factors, comorbidity, number of BP readings, and location of healthcare. Post-stroke BP trajectory differed between Blacks and Hispanics, and had different effects on mortality. These findings have important implications for post-stroke hypertension care

BACKGROUND: Sub-Saharan Africa (SSA) is facing a double burden of disease with a rising prevalence of non-communicable diseases (NCDs) while the burden of communicable diseases (CDs) remains high. Despite these challenges, there remains a significant need to understand how or under what conditions health interventions implemented in sub-Saharan Africa are sustained. The purpose of this study was to conduct a systematic review of empirical literature to explore how health interventions implemented in SSA are sustained. METHODS: We searched MEDLINE, Biological Abstracts, CINAHL, Embase, PsycInfo, SCIELO, Web of Science, and Google Scholar for available research investigating the sustainability of health interventions implemented in sub-Saharan Africa. We also used narrative synthesis to examine factors whether positive or negative that may influence the sustainability of health interventions in the region. RESULTS: The search identified 1819 citations, and following removal of duplicates and our inclusion/exclusion criteria, only 41 papers were eligible for inclusion in the review. Twenty-six countries were represented in this review, with Kenya and Nigeria having the most representation of available studies examining sustainability. Study dates ranged from 1996 to 2015. Of note, majority of these studies (30 %) were published in 2014. The most common framework utilized was the sustainability framework, which was discussed in four of the studies. Nineteen out of 41 studies (46 %) reported sustainability outcomes focused on communicable diseases, with HIV and AIDS represented in majority of the studies, followed by malaria. Only 21 out of 41 studies had clear definitions of sustainability. Community ownership and mobilization were recognized by many of the reviewed studies as crucial facilitators for intervention sustainability, both early on and after intervention implementation, while social and ecological conditions as well as societal upheavals were barriers that influenced the sustainment of interventions in sub-Saharan Africa. CONCLUSION: The sustainability of health interventions implemented in sub-Saharan Africa is inevitable given the double burden of diseases, health care worker shortage, weak health systems, and limited resources. We propose a conceptual framework that draws attention to sustainability as a core component of the overall life cycle of interventions implemented in the region.

Uncontrolled blood pressure (BP) is linked to increased risk of obstructive sleep apnea (OSA). However, few studies have assessed the impact of this relationship among blacks with metabolic syndrome (MetS). Data for this study were collected from 1035 blacks (mean age=62+/-13 years) enrolled in the Metabolic Syndrome Outcome study. Patients with a score 6 on the Apnea Risk Evaluation System were considered at risk for OSA. Of the sample, 77.1% were low-to-high OSA risk and 92.3% were hypertensive, of which 16.8% had uncontrolled BP levels. Analysis also showed that 60.4% were diabetic, 8.9% had a stroke history, 74.3% had dyslipidemia, 69.8% were obese and 30.9% had a history of heart disease. Logistic regression analyses were employed to investigate associations between uncontrolled BP and OSA risk, while adjusting for known covariates. Findings showed that uncontrolled BP independently increased the odds of OSA risk twofold (odds ratio=2.02, 95% confidence interval=1.18-3.48, P<0.05). In conclusion, our findings show that uncontrolled BP was associated with a twofold greater risk of OSA among blacks, suggesting that those with MetS and who have uncontrolled BP should be screened for the presence of OSA.Journal of Human Hypertension advance online publication, 6 August 2015; doi:10.1038/jhh.2015.78.

BACKGROUND: Although the efficacy of therapeutic lifestyle change (TLC) interventions are well proven, their relative effectiveness vs. single-session lifestyle counseling (SSC) on blood pressure (BP) reduction in primary care practices remains largely untested in hypertensive Blacks. The aim of this trial was to evaluate the comparative effectiveness of a comprehensive practice-based TLC intervention (motivational interviewing (MINT)-TLC) vs. SSC on BP reduction among 194 Blacks with uncontrolled hypertension. METHODS: The MINT-TLC arm included 10 weekly group classes on TLC, followed by 3 individual MINT sessions. The SSC group received 1 individual counseling session on lifestyle modification plus print versions of the intervention material. The primary outcome was within-patient change in systolic BP (SBP) and diastolic BP (DBP) from baseline to 6 months. The secondary outcome was BP control at 6 months. RESULTS: Mean age of the total sample was 57 (10.2) years; 50% were women, and the mean baseline BP was 147.4/89.3mm Hg. Eighty-four percent of SSC and 77% of MINT-TLC patients completed the final 6-month assessments. BP declined significantly (P < 0.001) in both groups at 6 months with a net-adjusted systolic BP reduction of 12.9mm Hg for the SSC group vs. 9.5mm Hg for the MINT-TLC group (P = 0.18); and diastolic BP reduction of 7.6 and 7.2mm Hg for the SSC and MINT-TLC group, respectively (P = 0.79). The between-group difference in proportion of patients with adequate BP control at 6 months was nonsignificant (P = 0.82). CONCLUSION: A significant group difference in BP between the intervention groups was not observed among a sample of hypertensive Blacks. Implementation of the pragmatic single-session intervention and its effects on utilization of healthcare services should be further evaluated. CLINICAL TRIAL REGISTRATION: Trial Number NCT01070056 at http://clinicaltrials.gov/ct2/show/NCT01070056?term=TLC+clinic&rank=1.

Many adults with elevated clinic blood pressure (BP) have lower BP when measured outside the clinic. This phenomenon, the "white-coat effect," may be larger among older adults, a population more susceptible to the adverse effects of low BP. The authors analyzed data from 257 participants in the Jackson Heart Study with elevated clinic BP (systolic/diastolic BP [SBP/DBP] >/=140/90 mm Hg) who underwent ambulatory BP monitoring (ABPM). The white-coat effect for SBP was larger for participants 60 years and older vs those younger than 60 years in the overall population (12.2 mm Hg, 95% confidence interval [CI], 9.2-15.1 mm Hg and 8.4 mm Hg, 95% CI, 5.7-11.1, respectively; P=.06) and among those without diabetes or chronic kidney disease (15.2 mm Hg, 95% CI, 10.1-20.2 and 8.6 mm Hg, 95% CI, 5.0-12.3, respectively; P=.04). After multivariable adjustment, clinic SBP >/=150 mm Hg vs <150 mm Hg was associated with a larger white-coat effect. Studies are needed to investigate the role of ABPM in guiding the initiation and titration of antihypertensive treatment, especially among older adults.

BACKGROUND: Few studies have examined the social and behavioral predictors of insufficient sleep. OBJECTIVE: To assess the social and behavioral predictors of insufficient sleep in the U.S. POPULATION: METHODS: Data from the 2009 Behavioral Risk Factor Surveillance System (BRFSS) were analyzed. Telephone interviews were conducted in six representative states that completed the optional sleep module. A total of 31,059 respondents were included in the present analysis. BRFSS-provided weights were applied to analyses to adjust for the use of complex design. RESULTS: The mean age for the sample was 56 +/- 16 years, with 63% of the sample being female; 88% identified as non-Hispanic white and 12% identified as non-Hispanic black; 42% were not married and 8% did not have a high school degree. The prevalence of insufficient sleep (<7 hours) was 37%. Multivariate-adjusted logistic regression revealed associations of four important factors with insufficient sleep, which were: working more than 40 hours per week [OR = 1.65, p < 0.001, 95% CI = 1.65-1.66], black race/ethnicity [OR = 1.37, p < 0.001, 95% CI = 1.37-1.38], history of heart disease [OR = 1.26, p < 0.001, 95% CI = 1.25-1.28], care-giving to family/friends [OR = 1.50, p < 0.001, 95% CI = 1.49-1.51], and lack of social and emotional support [OR = 1.24, p < 0.001, 95% CI = 1. 23-1.25]. CONCLUSION: Social and behavioral predictors of health uniquely contribute to the report of insufficient sleep and should be considered when developing programs to increase awareness of the adverse effects of insufficient sleep.

AIM: The aim of this study was to evaluate the National Institute of Health (NIH)-funded PRIDE Institute in Behavioral Medicine and Sleep Disorders Research at New York University (NYU) Langone Medical Center. The NYU PRIDE Institute provides intensive didactic and mentored research training to junior underrepresented minority (URM) faculty. METHOD: The Kirkpatrick model, a mixed-methods program evaluation tool, was used to gather data on participant's satisfaction and program outcomes. Quantitative evaluation data were obtained from all 29 mentees using the PRIDE REDcap-based evaluation tool. In addition, in-depth interviews and focus groups were conducted with 17 mentees to learn about their experiences at the institute and their professional development activities. Quantitative data were examined, and emerging themes from in-depth interviews and focus groups were studied for patterns of connection and grouped into broader categories based on grounded theory. RESULTS: Overall, mentees rated all programmatic and mentoring aspects of the NYU PRIDE Institute very highly (80-100%). They identified the following areas as critical to their development: research and professional skills, mentorship, structured support and accountability, peer support, and continuous career development beyond the summer institute. Indicators of academic self-efficacy showed substantial improvement over time. Areas for improvement included tailoring programmatic activities to individual needs, greater assistance with publications, and identifying local mentors when K awards are sought. CONCLUSIONS: In order to promote career development, numerous factors that uniquely influence URM investigators' ability to succeed should be addressed. The NYU PRIDE Institute, which provides exposure to a well-resourced academic environment, leadership, didactic skills building, and intensive individualized mentorship proved successful in enabling URM mentees to excel in the academic environment. Overall, the institute accomplished its goals: to build an infrastructure enabling junior URM faculty to network with one another as well as with senior investigators, serving as a role model, in a supportive academic environment.

OBJECTIVE: Obstructive sleep apnea (OSA) is a leading sleep disorder that is disproportionately more prevalent in minority populations and is a major risk factor for cardiovascular disease (CVD) morbidity and mortality. OSA is associated with many chronic conditions including hypertension, diabetes, and obesity, all of which are disproportionately more prevalent among blacks (ie, peoples of African American, Caribbean, or African descent). METHODS: This article reviews studies conducted in the United States (US) that investigated sleep screenings and adherence to treatment for OSA among blacks. In addition, guidelines are provided for implementing a practical framework to increase OSA screening and management among blacks. RESULTS: Several studies have documented racial/ethnic disparities in adherence to treatment for OSA. However, despite its public health significance, there is a paucity of studies addressing these disparities. Further, there is a lack of health programs and policies to increase screening and treatment of OSA among blacks and other minority populations. A practical framework to increase the number of blacks who are screened for OSA and treated appropriately is warranted. Such a framework is timely and major importance, as early identification of OSA in this high-risk population could potentially lead to early treatment and prevention of CVD, thereby reducing racial and ethnic disparities in sleep-related CVD morbidity and mortality.

OBJECTIVE: Our objective was to determine the effectiveness of combining positive affect and self-affirmation strategies with motivational interviewing in achieving blood pressure control among hypertensive African Americans (AA) compared with AA hypertensives in an education-only control group. DESIGN: Randomized trial. SETTING: Ambulatory practices in the South Bronx and Harlem, New York City. PARTICIPANTS: African American adults with uncontrolled hypertension. INTERVENTIONS: Participants were randomized to a positive affect and self-affirmation intervention or an education control group. The positive affect and self-affirmation intervention involved having participants think about things that made them happy and that reminded them of their core values on a daily basis. These strategies were reinforced every two months through motivational interviewing. The control arm received a workbook of strategies on blood pressure control. All participants were called every two months for one year. MAIN OUTCOMES: Blood pressure control rate. RESULTS: A total of 238 participants were randomized. The average age was 56 +/- 11 years, approximately 70% were female, 80% were not married, and up to 70% had completed high school. There was no difference in control rates between the intervention and the control group. However, at one year, female participants were more likely to be controlled. Participants with high depressive symptoms or high perceived stress at baseline were less likely to be controlled. CONCLUSIONS: While this study did not demonstrate an intervention effect, it does provide important insight into the psychosocial factors that may underlie blood pressure control in African Americans. Implications for future behavioral intervention trials are discussed.