Factors Associated with Seven-Year Incidence of Diabetes Complications among Older Mexican Americans

Obesity and risk of age-related eye diseases: a systematic review of prospective population-based studies

BACKGROUND

Obesity is a public health challenge worldwide. The relationship between obesity and age-related eye diseases including cataract, glaucoma, age-related macular degeneration (AMD) and diabetic retinopathy (DR) have remained elusive.

DESIGN AND METHODS

We conducted a systematic review of three electronic databases for longitudinal population-based studies that described associations between measures of obesity including body mass index (BMI), waist-circumference (WC), and waist-to-hip ratio (WHR), and age-related eye diseases.

RESULTS

Our search yielded 1731 articles, of which 14, 10, 16 and 8 articles met our eligibility criteria for cataract, glaucoma, AMD and DR, respectively. BMI-defined obesity was positively associated with incident cataract, incident AMD and incident DR in Western populations, but in Asian populations associations for incident AMD were not significant and associations for incident DR were inverse. WC-defined obesity was associated with incident glaucoma in non-Western populations. WHR-defined obesity but not BMI-defined obesity was associated with the incidence or progression of AMD in two Western studies.

CONCLUSIONS

Overall, we found strong evidence supporting associations between obesity and age-related eye diseases. Further research on the association of abdominal obesity and effect of weight loss and physical activity on age-related eye diseases is warranted to support clinical and public health recommendations.

Caregiver Well-Being and Burden: Variations by Race/Ethnicity and Care Recipient Nativity Status

BACKGROUND AND OBJECTIVES

Despite growing diversity among the aging population and extensive previous research on racial/ethnic minority caregivers, little research has been conducted on the potentially unique experiences and outcomes of informal caregivers of foreign-born care recipients. Using nationally representative data and the Stress Process Model, the current study examined the differences in caregiver outcomes (care burden, psychological well-being, and self-rated health) by care recipient nativity status (U.S.-born vs. foreign-born) and the extent to which caregiver outcomes vary by care recipient nativity status and caregiver race/ethnicity (non-Hispanic white, non-Hispanic black, Hispanic, and Others).

RESEARCH DESIGN AND METHODS

The current study used Round 5 of the National Health and Aging Trends Study and the National Study of Caregiving (N = 1,436). We conducted ordinary least squares regression to analyze the differences in caregiver's outcomes by care recipient nativity status and caregiver race/ethnicity and to investigate the impacts of the inclusion of caregiving factors (background factors, primary stressors, secondary stressors, and resources).

RESULTS

Regression analyses showed that only care burden significantly varied by care recipient nativity status after controlling for covariates. Caregivers of foreign-born care recipients reported a higher burden. However, when interactions of care recipient nativity status × caregiver race/ethnicity were introduced, non-Hispanic black and Hispanic caregivers of foreign-born care recipients were more likely to report better psychological well-being and self-rated health compared to their counterparts. Across caregiver groups, better caregiver-care recipient relationship quality and less caregiver chronic conditions were associated with less burden and better caregiver psychological well-being and self-rated health.

DISCUSSION AND IMPLICATIONS

Care recipient nativity status and caregiver race/ethnicity may have complex effects on caregiving experiences. Given the observed significant interaction effects for caregiver psychological well-being and self-rated health, cultural factors may affect the extent to which these caregivers appraise their caregiving. Future research should delve into the appropriate ways to assess care stress as well as resilience among each caregiver group. Our results indicate the need for research, education, and practice that assess cultural and within-group differences among caregivers and inform needed changes to structural barriers.

Moving Diabetes Upstream: the Social Determinants of Diabetes Management and Control Among Immigrants in the US

PURPOSE OF REVIEW

Relative to the US-born population, immigrants are less likely to successfully manage and control their diabetes, leading to a host of diabetes-related complications. This review draws on the social determinants of health framework (SDoH) to summarize the multilevel factors that shape diabetes care and management among immigrants in the USA.

RECENT FINDINGS

While the diabetes literature is replete with research on individual-level risk factors and health behaviors, empirical literature linking the SDoH to diabetes management among immigrants is limited. However, housing precarity, food insecurity, poverty, uninsurance and underinsurance, and limited support for immigrants in healthcare systems are consistently shown to deter diabetes management and care. Immigrants with diabetes face a multitude of structural constraints to managing their diabetes. More research that theorizes the role of SDoH in diabetes management along with empirical qualitative and quantitative studies are needed. Interventions to address diabetes also require a more upstream approach in order to mitigate the drivers of diabetes disparities among immigrants.

Incidence of chronic kidney disease among people with diabetes: a systematic review of observational studies

AIMS

The aim was to systematically review published articles that reported the incidence of chronic kidney disease among people with diabetes.

METHODS

A systematic literature search was performed using MEDLINE, Embase and CINAHL databases. The titles and abstracts of all publications identified by the search were reviewed and 10 047 studies were retrieved.

RESULTS

A total of 71 studies from 30 different countries with sample sizes ranging from 505 to 211 132 met the inclusion criteria. The annual incidence of microalbuminuria and albuminuria ranged from 1.3% to 3.8% for Type 1 diabetes. For Type 2 diabetes and studies combining both diabetes types, the range was from 3.8% to 12.7%, with four of six studies reporting annual rates between 7.4% and 8.6%. In studies reporting the incidence of eGFR < 60 ml/min/1.73 m² using the Modification of Diet on Renal Disease (MDRD) equation, apart from one study which reported an annual incidence of 8.9%, the annual incidence ranged from 1.9% to 4.3%. The annual incidence of end-stage renal disease ranged from 0.04% to 1.8%.

CONCLUSIONS

The annual incidence of microalbuminuria and albuminuria is ~ 2-3% in Type 1 diabetes, and ~ 8% in Type 2 diabetes or mixed diabetes type. The incidence of developing eGFR < 60 ml/min/1.73 m² is ~ 2-4% per year. Despite the wide variation in methods and study design, within a particular category of kidney disease, there was only modest variation in incidence rates. These findings may be useful in clinical settings to help understand the risk of developing kidney disease among those with diabetes.

Factors associated with poor glycemic control in older Mexican American diabetics aged 75 years and older

OBJECTIVE

This study examines the prevalence and correlates of poor glycemic control in Mexican Americans aged 75 years and older with diabetes.

METHODS

Data are from the 5(th) wave (2004-05) of the Hispanic Established Population for the Epidemiological Study of the Elderly (H-EPESE). A total of 2,069 Mexican Americans aged 75 and over were interviewed. Six hundred eighty nine subjects (33.5%) reported having been diagnosed with diabetes and 209 (30.3%) subjects agreed to a blood test of their HbA(1)c level.

RESULTS

Of the 209 diabetic subjects with an HbA(1)c test, 73 (34.9%) had good glycemic control (HbA(1)c <7%) and 136 (65.1%) had poor glycemic control (HbA(1)c >7%). Bivariate analysis revealed that subjects with poor control had longer disease duration, had lower education, used the glucometer more frequently, and had more diabetes-complications when compared to those in the good glycemic control group. Multivariable logistic regression analysis found the following factors associated with poor glycemic control: <8 years of education, foreign-born, smoking, obesity, longer disease duration, daily glucometer use, and having macro-complications.

DISCUSSION

Prevalence of poor glycemic control is very high in this population with very high and rising prevalence of diabetes. Further studies are needed to explore the effect of these and other characteristics on glycemic control among older Mexican Americans and to develop appropriate interventions to improve diabetes outcomes and increase life-expectancy.

Factors influencing health care utilization in older Hispanics with diabetes along the Texas-Mexico border

Little is known about predictors of health care utilization for older Hispanics with chronic conditions. This study aimed to determine: (1) the level of health care access for older Hispanics with type 2 diabetes living in a US-Mexico border area; and (2) personal and health correlates to health care utilization (ie, physician visits, eye care, emergency room [ER] use). This was a cross-sectional study based on a community assessment conducted at a clinic, senior centers, and colonias. Colonias are impoverished neighborhoods with substandard living conditions along the US-Mexico border. Hispanics living in colonias are one of the most disadvantaged minority groups in the United States. The study sample consisted of 249 Hispanics age 60 years and older who have type 2 diabetes. Descriptive analyses, multiple linear regression, and generalized linear models were conducted. Older age (P = 0.02) and affordability of physician fees (P = 0.02) were significant correlates to more frequent physician visits. Factors significantly associated with eye care were being insured (P = 0.001) and reporting high cholesterol (P = 0.005). ER use was significantly associated with younger age (60-64 years old; P = 0.03) and suffering from hypertension (P = 0.02). Those who received diabetes education (P = 0.04) were less likely to use the ER. Identifying patterns of health care utilization services in aging underserved minorities who are disproportionately affected by diabetes may lead to culturally appropriate preventive practices and timely access to health care. Adequate health care access can decrease or delay the onset of diabetes complications in older Hispanics with type 2 diabetes who live along the US-Mexico border.

The economic consequences of diabetes and cardiovascular disease in the United States

Diabetes-related care and complications constitute a significant proportion of the United States' (US) health care expenditure. Of these complications, cardiovascular disease (CVD) is a major component. Higher morbidity and mortality rates translate to higher costs of care in patients with diabetes compared to those who do not have the disease. Minorities bear a disproportionate burden of diabetes and CVD. We review this disparity and examine potential etiologies for it in Hispanics and African-Americans, the two largest minority groups in the US. We examine strategies in these populations that may improve outcomes in diabetes and CVD, potentially decreasing health care costs.

Trends in diabetes prevalence and diabetes-related complications in older Mexican Americans from 1993-1994 to 2004-2005

OBJECTIVE

Evidence has shown that Mexican Americans have a higher prevalence of diabetes and a greater risk for diabetes-related complications than non-Hispanic whites. However, no studies have described the changes in prevalence among older Mexican Americans. The purpose of this study was to expand on the current literature by examining the trends in diabetes prevalence and diabetes-related complications in Mexican Americans aged >or=75 years from 1993-1994 to 2004-2005.

RESEARCH DESIGN AND METHODS

The prevalences of self-reported diabetes and diabetes-related complications were estimated in the original cohort (1993-1994) and the new cohort (2004-2005) of the Hispanic Established Population for the Epidemiologic Study of the Elderly (Hispanic EPESE) and were compared across the two surveys.

RESULTS

The prevalence of diabetes among Mexican Americans aged >or=75 years has nearly doubled between 1993-1994 and 2004-2005 from 20.3 to 37.2%, respectively (P < 0.001). The increase in the prevalence of diabetes was similar across all sociodemographic factors. Diabetes complications did not change significantly between the two cohorts. However, the prevalence of having any lower-extremity function disability did increase between the two cohorts.

CONCLUSIONS

The prevalence of diabetes in older Mexican Americans has increased dramatically. At the same time, there has been no improvement in diabetes-related complications as has been found in the general older population. These findings heighten the urgency for more effective public health interventions targeted to this population. As diabetes and obesity become more prevalent in older adults, physicians should encourage appropriate management in older patients, including early detection and glycemic control.