Kelly Karavolos

Chronic exposure to everyday discrimination and coronary artery calcification in African-American women: the SWAN Heart Study.

Background: Emerging evidence suggests that exposure to discrimination may be associated with atherosclerosis in African-American women, although research in this area focused on short-term rather than chronic exposure to discriminatory events. Methods: We examined the relationship between chronic exposure to multiple types of discrimination (self-reported and averaged over 5 years) and coronary artery calcification (CAC) in a sample of 181 middle-aged African-American women. Discrimination was assessed at each time point, and the presence/absence of CAC was assessed at the fifth annual follow-up examination by electron beam tomography. We hypothesized that chronic discrimination would be more strongly associated with CAC than recent discrimination and that racial/ethnic discrimination would be more strongly associated with CAC than other types of discrimination. Results: Chronic exposure to discrimination was significantly associated with the presence of CAC in unadjusted logistic regression analyses (p = .007) and after adjustment for demographics (p = .01), standard cardiovascular risk factors (p = .02), and Body Mass Index (BMI) (p = .05). In contrast, recent discrimination was only marginally associated with the presence of CAC in both unadjusted (p = .06) and fully adjusted logistic regression models (p = .08). Persistent exposure to racial/ethnic discrimination was not more strongly associated with CAC compared with other types of discrimination in either unadjusted or adjusted models. Conclusion: Chronic exposure to discrimination may be an important risk factor for early coronary calcification in African-American women. This association appears to be driven by exposure to discrimination from multiple sources, rather than exposure to racial/ethnic discrimination alone. CVD = cardiovascular disease; CAC = coronary artery calcification; SWAN = Study of Women’s Health Across the Nation; EBT = electron beam tomographic; CES-D = Center for Epidemiological Studies Depression; BMI = body mass index; FRS = Framingham Risk score; HDL-c = high density lipoprotein cholesterol; CRP = C-reactive protein; OR = odds ratio; CI = confidence interval; IMT = intima-media thickness.

Limited English Proficiency and Breast and Cervical Cancer Screening in a Multiethnic Population

OBJECTIVES We examined the relationship between ability to speak English and receipt of Papanicolaou tests, clinical breast examinations, and mammography in a multiethnic group of women in the United States. METHODS We used longitudinal data from the Study of Women Across the Nation to examine receipt of breast and cervical cancer screening among Chinese, Japanese, Hispanic, and White women who reported reading and speaking (1) only a language other than English, (2) another language more fluently than English, or (3) only English or another language and English with equal fluency. Logistic regression was used to analyze the data. RESULTS Reading and speaking only a language other than English and reading and speaking another language more fluently than English, were significantly and negatively associated with receipt of breast and cervical cancer screening in unadjusted models. Although these findings were attenuated in adjusted models, not speaking English well or at all remained negatively associated with receipt of cancer screening. CONCLUSIONS These findings suggest that language barriers contribute to health disparities by impeding adequate health communication.

Musculoskeletal pain and menopausal status.

ObjectivesThe authors examined whether self-reported menopausal status is associated with musculoskeletal pain in a multiethnic population of community-dwelling middle-aged women after considering sociodemographics, medical factors, smoking, depression, and body mass index using a cross-sectional study design. MethodsParticipants were 2218 women from the Study of Womens Health Across the Nation assessed at the time of their third annual follow-up exam. Two dependent variables were derived from a factor analysis of survey questions about pain. These 2 outcomes were Aches and Pains, derived from 5 of 6 pain symptom questions and Consultation for Low Back Pain, derived from 1 question. ResultsPrevalence of aches and pains was high, with 1 in 6 women reporting daily symptoms. Compared with premenopausal women, those who were early perimenopausal (P=0.002), late perimenopausal (P=0.002), or postmenopausal (P<0.0001) reported significantly more aches and pains in age-adjusted analysis. With complete risk factor adjustment, postmenopausal women still reported significantly greater pain symptoms (P=0.03) than did premenopausal women. Menopausal status was marginally related to consulting a healthcare provider for back pain. DiscussionThis study demonstrates an association between pain and self-reported menopausal status, with postmenopausal women experiencing greater pain symptoms than premenopausal women.

Depressive Symptoms and Increased Visceral Fat in Middle-Aged Women

Objective: To examine whether depressive symptoms are differentially associated with visceral adipose tissue (VAT), which is more metabolically active and confers greater cardiovascular risk than subcutaneous fat (SAT). Prior research has shown an association between depression and central adiposity. Mechanisms underlying the association between depression and increased cardiovascular risk remain poorly understood. Central adiposity is one potential pathway. Methods: We investigated the cross-sectional association between depressive symptoms, assessed by the Center for Epidemiological Studies Depression Scale (CES-D), and VAT and SAT, assessed by computed tomography, in a sample of 409 middle-aged women (44.7% African-Americans, 55.3% Whites; mean age = 50.4 years) participating in the Chicago site of the Study of Womens Health Across the Nation (SWAN). Results: With adjustments for age, race, total percent fat, and sex hormone binding globulin (SHBG), each 1-point higher score on the CES-D was associated with 1.03-cm2 greater VAT (p < .001). Women with a CES-D score of ≥16, indicative of clinically relevant depressive symptomatology, had 24.5% more VAT than women with lower CES-D scores (p < .001). Further adjustment for Framingham Risk Score and physical activity did not alter the findings, and associations did not vary by race. Associations were strongest in obese and overweight women. Depressive symptoms were unrelated to SAT. Conclusions: Increased visceral fat may be one pathway by which depression contributes to excess risk for cardiovascular disease and diabetes. Further research is needed to examine whether depressive symptoms influence accumulation of VAT over time. BMI = body mass index; CES-D = Center for Epidemiological Studies Depression Scale; CT = computed tomography; CVD = cardiovascular disease; DXA = dual energy x-ray absorptiometry; FRS = Framingham Risk Score; Health ABC = Dynamics of Health, Aging and Body Composition; HDL-C = high-density lipoprotein cholesterol; HPA = hypothalamic-pituitary-adrenal; KPAS = Kaiser Physical Activity Survey; SAT = subcutaneous adipose tissue; SHBG = sex hormone binding globulin; SWAN = Study of Womens Health Across the Nation; VAT = visceral adipose tissue.

Physical Activity and Reduced Intra-abdominal Fat in Midlife African-American and White Women

The purpose of our study was to determine whether self‐reported physical activity (PA), including recreational, household, and exercise activities, is associated with intra‐abdominal fat (IAF) in community‐dwelling white and black midlife women. We performed a cross‐sectional study of 369 women from the Chicago site of the Study of Womens Health Across the Nation (SWAN) ancillary study, the SWAN Fat Patterning Study. PA level was the independent variable, and IAF, assessed by computerized tomography (CT) scan, was the dependent variable. Measures were obtained at SWAN Fat Patterning Baseline visit between August 2002 and December 2005. Linear regression models explored the association between PA and IAF. The first model included IAF as the outcome and total score PA as the main predictor, adjusting for total percent fat mass, age, and ethnicity. The second model included education, parity, sex hormone–binding globulin (SHBG) level, and depressive symptoms, measured by Center for Epidemiological Studies‐Depression (CES‐D) scale. Each 1‐point higher total PA score was associated with a 4.0 cm2 lower amount of IAF (P = 0.004), independent of total percent fat mass, age, ethnicity, SHBG level, educational level, CES‐D, and parity. Associations did not differ between white and black women. This study demonstrates a significant negative association between PA and IAF independent of multiple covariates in midlife women. Our findings suggest that motivating white and black women to increase PA during midlife may lessen IAF, which may have a positive impact on subsequent development of diabetes and cardiovascular disease.

How well does the body adiposity index capture adiposity change in midlife women?: The SWAN fat patterning study†

The body adiposity index (BAI) is a proposed alternative to the body mass index (BMI) that has shown good cross‐sectional agreement with percent body fat (%BF) in validation studies. The objective of this study was to examine the ability of BAI to track adiposity change over time in a biracial sample of midlife women.

The Association between Self-Reported Energy Intake and Intra-Abdominal Adipose Tissue in Perimenopausal Women

We have previously shown that physical activity predicts intra-abdominal adipose tissue (IAT), but it is unknown whether energy intake predicts IAT independently of physical activity in a community-based, naturalistic environment. The association of energy intake with IAT was explored cross-sectionally in women, recruited between 2002 and 2005 for a study of fat patterning in midlife. IAT at L4-L5 vertebral interspace was assessed by computed tomography, energy intake by the Block Food Frequency Questionnaire, and physical activity by the Kaiser Physical Activity Survey. Linear regression models were used for the principal analyses. Among the 257 women, 48% were African American and 52% were Caucasian. Women were 52 ± 3 years old, and 49% were postmenopausal. Every 500 kcal increase in energy intake was associated with a 6% higher IAT (P = 0.02), independent of physical activity (P = 0.02), after adjustment for ethnicity, menopausal status, age, smoking, income, and DXA-assessed percent body fat. Energy intake had a significant interaction with ethnicity (P = 0.02), but not with physical activity. Models using the IAT to subcutaneous abdominal adipose tissue ratio as an outcome had similar associations. In conclusion, self-reported EI was associated with preferential IAT accumulation in midlife women, independent of physical activity. This association was significantly stronger in Caucasian than African American women. Future longitudinal studies are needed to explore lifestyle predictors of IAT accumulation during the menopausal transition.

Hostility is associated with visceral, but not subcutaneous, fat in middle-aged African American and white women.

Objective: To examine the cross-sectional association between hostility and measures of abdominal fat (visceral, subcutaneous) in middle-aged African American and white women. Because fat-patterning characteristics are known to differ by race, we were particularly interested in examining whether these associations were similar for women of both racial/ethnic groups. Methods: Participants were 418 (45% African American, 55% white) middle-aged women from the Chicago site of the Study of Womens Health Across the Nation. Visceral and subcutaneous fat were measured by computed tomographic scans and hostility was assessed via questionnaire. Multivariate linear regression models were conducted to test associations among race/ethnicity, hostility, and measures of abdominal fat. Results: In models adjusted for race/ethnicity and total percent fat, higher levels of hostility were associated with a greater amount of visceral fat (B = 1.8, standard error = 0.69, p = .01). This association remained significant after further adjustments for education, and multiple coronary heart disease (CHD) risk factors. Hostility was not associated with subcutaneous fat (p = .8). Although there were significant racial/ethnic differences in hostility (p < .001) and the amount of total body (p < .001), subcutaneous (p < .001) and visceral fat (p < .001), the associations between hostility and measures of abdominal fat did not differ for African American compared with white women (race/ethnicity × hostility interaction, p = .67 for visceral, p = .85 for subcutaneous). Conclusions: Hostility may affect CHD risk in women via the accumulation of visceral fat. Despite significant black-white differences in fat patterning and overall CHD risk, the association between hostility and visceral fat seems to be similar for both African American and white women. CHD = coronary heart disease; SWAN = Study of Womens Health Across the Nation; BMI = body mass index; DXA = dual energy X-ray absorptiometry; CT = computed tomographic; SBP = systolic blood pressure; HDL-c = high-density lipoprotein cholesterol; DBP = diastolic blood pressure; LDL = low-density lipoprotein; SHBG = sex hormone-binding globulin; WHR = waist/hip ratio; ANS = autonomic nervous system..

Results from a community-based trial testing a community health worker asthma intervention in Puerto Rican youth in Chicago

Abstract Objective: Puerto Rican children suffer disproportionately from asthma. Project CURA tested the efficacy of a community health worker (CHW) intervention to improve use of inhaled corticosteroids (ICS) and reduce home asthma triggers in Puerto Rican youth in Chicago. Methods: This study employed a behavioral randomized controlled trial design with a community-based participatory research approach. Medications and technique were visually assessed; adherence was determined using dose counters. Home triggers were assessed via self-report, visual inspection and salivary cotinine. All participants received education on core asthma topics and self-management skills. Participants in the CHW arm were offered home education by the CHW in four visits over four months. The attention control arm received four newsletters covering the same topics. Results: While most of the participants had uncontrolled persistent asthma, < 50% had ICS at baseline. In the CHW arms, 67% of participants received the full four-visit intervention. In the Elementary school cohort (n = 51), the CHW arm had lower odds of having an ICS (OR = 0.2; p = 0.02) at 12-months; no differences were seen in other outcomes between arms at any time point. The only significant treatment arm difference in the high school cohort (n = 50) was in inhaler technique where the CHW arm performed 18.0% more steps correct at five months (p < 0.01) and 14.2% more steps correct at 12 months (p < 0.01). Conclusions: While this CHW intervention did not increase the number of participants with ICS or reduce home asthma triggers, important lessons were learned including challenges to CHW intervention fidelity and the need for CHWs to partner with clinical providers.

Addressing asthma and obesity in children with community health workers: Proof-of-concept intervention development

BackgroundThe objective of this study was to design and test the feasibility and impact of a community health worker (CHW) intervention for comorbid asthma and obesity.MethodsUsing a proof of concept study design, we collected pre/post outcomes from a single intervention cohort of urban low-income in a single community area. A community-based participatory research approach was employed. Forty-six children and their caregivers were recruited. Children were 5–12 years old with physician-diagnosed asthma and body mass index (BMI) > 85%. Families were offered 12 home visits from CHWs that integrated asthma and obesity core curriculums. The primary asthma outcome was asthma control, measured via the Childhood Asthma Control Test (cACT). The primary obesity outcome was child body mass index (BMI).ResultsFamilies received a median of 10 out of the 12 home visits over 1 year. At 1 year, there was a significant improvement in the number of children with controlled asthma as measured via cACT (85.7% at 1 year compared to 61.9% at baseline, p = 0.01). Activity limitations and emergency utilization were reduced while inhaler technique improved (p < 0.01 for all). Child BMI z-score was reduced: mean = 1.97 (SD 0.79) at 1 year compared to mean = 2.13 (SD 0.40) at baseline, p < 0.01. No association was seen between change in child BMI and change in asthma control. Worse baseline child depression scores were associated with less improvement in asthma control (p = 0.003) and higher baseline caregiver post-traumatic stress disorder scores were associated with increased child BMI (p = 0.012).ConclusionsThe CHW intervention has promise for improving asthma and weight outcomes in high-risk children with comorbid asthma and obesity; this model warrants further development and investigation.