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2.
J Health Care Poor Underserved ; 33(1): 362-373, 2022.
Article in English | MEDLINE | ID: mdl-35153226

ABSTRACT

PURPOSE: To understand the health needs and challenges experienced by the patient population served by a student-run free clinic in Jackson, Mississippi. METHODS: A retrospective chart review was conducted on all patients who presented between 2017 and 2019. Data collected included age, race, sex, hometown, number of visits, chief complaint, lab utilization, blood pressure, and body mass index. RESULTS: The patient population was 73.3% African American and 55.5% female and came from 88 different towns across Mississippi. Most patients (54.1%) came only once. Nearly half (46.7%) of African American patients and 50.0% of White patients were obese. The top three chief complaints were health management (40.3%), STI/UTI (9.3%), and musculoskeletal (7.5%). CONCLUSIONS: The data indicate a need for the development of programs to improve patient access to care and resources: a community health outreach program, a social health services program, and further studies to determine the effectiveness of care provided.


Subject(s)
Student Run Clinic , Ambulatory Care Facilities , Female , Humans , Male , Mississippi/epidemiology , Retrospective Studies , Students
3.
Am J Ophthalmol ; 233: 111-123, 2022 01.
Article in English | MEDLINE | ID: mdl-34166655

ABSTRACT

To identify functionally related genes associated with diabetic retinopathy (DR) risk using gene set enrichment analyses applied to genome-wide association study meta-analyses. METHODS: We analyzed DR GWAS meta-analyses performed on 3246 Europeans and 2611 African Americans with type 2 diabetes. Gene sets relevant to 5 key DR pathophysiology processes were investigated: tissue injury, vascular events, metabolic events and glial dysregulation, neuronal dysfunction, and inflammation. Keywords relevant to these processes were queried in 4 pathway and ontology databases. Two GSEA methods, Meta-Analysis Gene set Enrichment of variaNT Associations (MAGENTA) and Multi-marker Analysis of GenoMic Annotation (MAGMA), were used. Gene sets were defined to be enriched for gene associations with DR if the P value corrected for multiple testing (Pcorr) was <.05. RESULTS: Five gene sets were significantly enriched for numerous modest genetic associations with DR in one method (MAGENTA or MAGMA) and also at least nominally significant (uncorrected P < .05) in the other method. These pathways were regulation of the lipid catabolic process (2-fold enrichment, Pcorr = .014); nitric oxide biosynthesis (1.92-fold enrichment, Pcorr = .022); lipid digestion, mobilization, and transport (1.6-fold enrichment, P = .032); apoptosis (1.53-fold enrichment, P = .041); and retinal ganglion cell degeneration (2-fold enrichment, Pcorr = .049). The interferon gamma (IFNG) gene, previously implicated in DR by protein-protein interactions in our GWAS, was among the top ranked genes in the nitric oxide pathway (best variant P = .0001). CONCLUSIONS: These GSEA indicate that variants in genes involved in oxidative stress, lipid transport and catabolism, and cell degeneration are enriched for genes associated with DR risk. NOTE: Publication of this article is sponsored by the American Ophthalmological Society.


Subject(s)
Diabetes Mellitus, Type 2 , Diabetic Retinopathy , Diabetes Mellitus, Type 2/genetics , Diabetic Retinopathy/genetics , Genome-Wide Association Study , Humans , Polymorphism, Single Nucleotide , Risk Factors
4.
Front Psychiatry ; 10: 112, 2019.
Article in English | MEDLINE | ID: mdl-30949071

ABSTRACT

Intensive tobacco treatment programs offer many advantages relative to other treatment options, particularly for more complex patients, e.g., highly nicotine dependent, or those with medical and psychiatric symptoms and disorders. Efforts to better understand those who choose to enroll in these programs, particularly regarding the characteristics they possess known to mediate outcomes, are important considerations in tailoring available services. In this study, we examined how participants differed on key descriptive and tobacco use variables within race (i.e., African-American, Caucasian) and sex subgroups. Baseline characteristics from a large group of consecutive program enrollees were examined across targeted subgroups. Strong racial effects and some sex effects were noted for marital status, education, employment and health insurance status, alcohol consumption, presence of medical and psychiatric disorders, as well as participant tobacco use patterns and tobacco use rates of family, friends and coworkers. The differences in participant tobacco use measures across race and sex factors remained significant after adjusting for the confounding effects of all other covariates. These findings have implications for characterizing key patient subgroups who present at tobacco treatment clinics. Such information may contribute to options for tailoring treatment regimens.

5.
Orbit ; 38(2): 87-94, 2019 Apr.
Article in English | MEDLINE | ID: mdl-29517388

ABSTRACT

The purpose is to evaluate the utility of optical coherence tomography (OCT) angiography in the evaluation of Graves' orbitopathy (GO) and response to orbital decompression in patients with and without dysthyroid optic neuropathy (DON). This was a single-center, prospective case series in a cohort of 12 patients (24 orbits) with GO and ±DON, (6 orbits) who underwent bilateral orbital decompression. All patients underwent pre- and postoperative OCT angiography of the peripapillary area. Vessel density indices were calculated in a 4.5 mm × 4.5 mm ellipsoid centered on the optic disk using split-spectrum amplitude decorrelation angiography algorithm, producing the vessel density measurements. Mean change in vessel density indices was compared between pre- and postoperative sessions and between patients with and without DON. Patient 1, a 34-year-old male with GO and unilateral DON OD, showed a significant reduction in blood vessel density indices oculus dexter (OD) (DON eye) after decompression while a more modest reduction was found oculus sinister (OS) with the greatest change noted intrapapillary. Patient 2, a 50-year-old male with DON OU, showed worsening neuropathy following decompression OD that was confirmed by angiographic density indices. Patient 3, a 55-year-female with DON, showed a reduction in blood vessel density OD and increased density OS. Patients without DON showed overall less impressive changes in indices as compared to those with DON. Using OCT angiography, response to surgical treatment in GO orbits, more so in orbits with DON, can be demonstrated and quantified using vessel density indices with reproducibility.


Subject(s)
Blood Vessels/pathology , Decompression, Surgical/methods , Graves Ophthalmopathy/physiopathology , Graves Ophthalmopathy/surgery , Optic Disk/blood supply , Orbit/surgery , Tomography, Optical Coherence/methods , Adult , Aged , Blood Flow Velocity , Ciliary Arteries/pathology , Female , Fluorescein Angiography , Humans , Male , Middle Aged , Ophthalmic Artery/pathology , Ophthalmologic Surgical Procedures , Prospective Studies , Regional Blood Flow , Retinal Vessels/pathology
6.
Acta Ophthalmol ; 96(7): e811-e819, 2018 Nov.
Article in English | MEDLINE | ID: mdl-30178632

ABSTRACT

PURPOSE: Diabetic retinopathy is the most common eye complication in patients with diabetes. The purpose of this study is to identify genetic factors contributing to severe diabetic retinopathy. METHODS: A genome-wide association approach was applied. In the Genetics of Diabetes Audit and Research in Tayside Scotland (GoDARTS) datasets, cases of severe diabetic retinopathy were defined as type 2 diabetic patients who were ever graded as having severe background retinopathy (Level R3) or proliferative retinopathy (Level R4) in at least one eye according to the Scottish Diabetic Retinopathy Grading Scheme or who were once treated by laser photocoagulation. Controls were diabetic individuals whose longitudinal retinopathy screening records were either normal (Level R0) or only with mild background retinopathy (Level R1) in both eyes. Significant Single Nucleotide Polymorphisms (SNPs) were taken forward for meta-analysis using multiple Caucasian cohorts. RESULTS: Five hundred and sixty cases of type 2 diabetes with severe diabetic retinopathy and 4,106 controls were identified in the GoDARTS cohort. We revealed that rs3913535 in the NADPH Oxidase 4 (NOX4) gene reached a p value of 4.05 × 10-9 . Two nearby SNPs, rs10765219 and rs11018670 also showed promising p values (p values = 7.41 × 10-8 and 1.23 × 10-8 , respectively). In the meta-analysis using multiple Caucasian cohorts (excluding GoDARTS), rs10765219 and rs11018670 showed associations for diabetic retinopathy (p = 0.003 and 0.007, respectively), while the p value of rs3913535 was not significant (p = 0.429). CONCLUSION: This genome-wide association study of severe diabetic retinopathy suggests new evidence for the involvement of the NOX4 gene.


Subject(s)
Diabetes Mellitus, Type 2/complications , Diabetic Retinopathy/genetics , NADPH Oxidase 4/genetics , Polymorphism, Single Nucleotide , Adult , Diabetic Retinopathy/etiology , Diabetic Retinopathy/surgery , Female , Genetic Predisposition to Disease , Genome-Wide Association Study , Genotyping Techniques , Humans , Laser Coagulation , Male , Middle Aged , Scotland , White People/genetics
8.
Alzheimers Dement ; 14(2): 167-177, 2018 02.
Article in English | MEDLINE | ID: mdl-28916238

ABSTRACT

INTRODUCTION: Existing studies predominantly consider the association of late-life lipid levels and subsequent cognitive change. However, midlife rather than late-life risk factors are often most relevant to cognitive health. METHODS: We quantified the association between measured serum lipids in midlife and subsequent 20-year change in performance on three cognitive tests in 13,997 participants of the Atherosclerosis Risk in Communities study. RESULTS: Elevated total cholesterol, low-density lipoprotein cholesterol, and triglycerides were associated with greater 20-year decline on a test of executive function, sustained attention, and processing speed. Higher total cholesterol and triglycerides were also associated with greater 20-year decline in memory scores and a measure summarizing performance on all three tests. High-density lipoprotein cholesterol was not associated with cognitive change. Results were materially unchanged in sensitivity analyses addressing informative missingness. DISCUSSION: Elevated total cholesterol, low-density lipoprotein cholesterol, and triglycerides in midlife were associated with greater 20-year cognitive decline.


Subject(s)
Cognition Disorders/blood , Lipids/blood , Aged , Cohort Studies , Executive Function/physiology , Female , Humans , Male , Middle Aged , Models, Statistical , Neuropsychological Tests , Residence Characteristics
9.
Diabetes ; 66(12): 3130-3141, 2017 12.
Article in English | MEDLINE | ID: mdl-28951389

ABSTRACT

Results from observational studies examining dyslipidemia as a risk factor for diabetic retinopathy (DR) have been inconsistent. We evaluated the causal relationship between plasma lipids and DR using a Mendelian randomization approach. We pooled genome-wide association studies summary statistics from 18 studies for two DR phenotypes: any DR (N = 2,969 case and 4,096 control subjects) and severe DR (N = 1,277 case and 3,980 control subjects). Previously identified lipid-associated single nucleotide polymorphisms served as instrumental variables. Meta-analysis to combine the Mendelian randomization estimates from different cohorts was conducted. There was no statistically significant change in odds ratios of having any DR or severe DR for any of the lipid fractions in the primary analysis that used single nucleotide polymorphisms that did not have a pleiotropic effect on another lipid fraction. Similarly, there was no significant association in the Caucasian and Chinese subgroup analyses. This study did not show evidence of a causal role of the four lipid fractions on DR. However, the study had limited power to detect odds ratios less than 1.23 per SD in genetically induced increase in plasma lipid levels, thus we cannot exclude that causal relationships with more modest effect sizes exist.


Subject(s)
Diabetic Retinopathy/etiology , Lipids/blood , Mendelian Randomization Analysis , Aged , Diabetic Retinopathy/blood , Female , Genome-Wide Association Study , Humans , Male , Middle Aged , Polymorphism, Single Nucleotide , Risk
10.
PLoS Genet ; 13(5): e1006728, 2017 May.
Article in English | MEDLINE | ID: mdl-28498854

ABSTRACT

Hypertension is a leading cause of global disease, mortality, and disability. While individuals of African descent suffer a disproportionate burden of hypertension and its complications, they have been underrepresented in genetic studies. To identify novel susceptibility loci for blood pressure and hypertension in people of African ancestry, we performed both single and multiple-trait genome-wide association analyses. We analyzed 21 genome-wide association studies comprised of 31,968 individuals of African ancestry, and validated our results with additional 54,395 individuals from multi-ethnic studies. These analyses identified nine loci with eleven independent variants which reached genome-wide significance (P < 1.25×10-8) for either systolic and diastolic blood pressure, hypertension, or for combined traits. Single-trait analyses identified two loci (TARID/TCF21 and LLPH/TMBIM4) and multiple-trait analyses identified one novel locus (FRMD3) for blood pressure. At these three loci, as well as at GRP20/CDH17, associated variants had alleles common only in African-ancestry populations. Functional annotation showed enrichment for genes expressed in immune and kidney cells, as well as in heart and vascular cells/tissues. Experiments driven by these findings and using angiotensin-II induced hypertension in mice showed altered kidney mRNA expression of six genes, suggesting their potential role in hypertension. Our study provides new evidence for genes related to hypertension susceptibility, and the need to study African-ancestry populations in order to identify biologic factors contributing to hypertension.


Subject(s)
Blood Pressure/genetics , Genetic Loci , Hypertension/genetics , Multifactorial Inheritance , Black or African American/genetics , Animals , Basic Helix-Loop-Helix Transcription Factors/genetics , Cadherins/genetics , Case-Control Studies , Female , Genome-Wide Association Study , Humans , Hypertension/ethnology , Male , Membrane Proteins/genetics , Mice , Polymorphism, Single Nucleotide
11.
Vision Res ; 139: 168-176, 2017 10.
Article in English | MEDLINE | ID: mdl-28431867

ABSTRACT

Rare or novel gene variants in patients with proliferative diabetic retinopathy may contribute to disease development. We performed whole exome sequencing (WES) on patients at the phenotypic extremes of diabetic retinal complications: 57 patients diagnosed with proliferative diabetic retinopathy (PDR) as cases and 13 patients with no diabetic retinopathy despite at least 10years of type 2 diabetes as controls. Thirty-one out of the 57 cases and all 13 controls were from the African American Proliferative Diabetic Retinopathy Study (AA). The rest of the cases were of mixed ethnicities (ME). WES identified 721 candidate genes with rare or novel non-synonymous variants found in at least one case with PDR and not present in any controls. After filtering for genes with null alleles in greater than two cases, 28 candidate genes were identified in our ME cases and 16 genes were identified in our AA cases. Our analysis showed rare and novel variants within these genes that could contribute to the development of PDR, including rare non-synonymous variants in FAM132A, SLC5A9, ZNF600, and TMEM217. We also found previously unidentified variants in VEGFB and APOB. We found that VEGFB, VPS13B, PHF21A, NAT1, ZNF600, PKHD1L1 expression was reduced in human retinal endothelial cells (HRECs) cultured under high glucose conditions. In an exome sequence analysis of patients with PDR, we identified variants in genes that could contribute to pathogenesis. Six of these genes were further validated and found to have reduced expression in HRECs under high glucose conditions, suggestive of an important role in the development of PDR.


Subject(s)
Diabetic Retinopathy/genetics , Exome Sequencing , Retinal Neovascularization/genetics , Genetic Association Studies , Genetic Predisposition to Disease , Humans
12.
Infect Dis (Auckl) ; 10: 1178633617731741, 2017.
Article in English | MEDLINE | ID: mdl-29317828

ABSTRACT

Based on the observation that the parasite Onchocerca volvulus selectively absorbs vitamin A from the host, and the known toxicity of vitamin A in higher concentration, it was hypothesized that dying microfilariae (mf) release their stores of vitamin A (retinoids) into the host circulation in toxic concentrations, inducing the signs and symptoms of onchocerciasis. We conducted a pilot study to test the hypothesis in Songea communities in Southern Tanzania, where mass drug administration with ivermectin had not been implemented by the time of the survey. The specific aim was to evaluate the correlation between the diagnosis of onchocerciasis and increased levels of retinoic acid at infection sites. The analysis was performed by determining copy numbers of a genome of O volvulus present in skin snip samples of persons with onchocerciacis, and correlating these numbers with expression levels of retinoic acid receptor-α (RAR-α), which is inducible by retinoic acid. Total DNA and RNA were extracted from each of 25 mf-positive and 25 mf-negative skin samples and evaluated using quantitative polymerase chain reaction with appropriate negative controls. Analysis of the samples, adjusted with glyceraldehyde 3-phosphate dehydrogenase gene levels, revealed that most samples with detectable RAR-α transcripts had higher levels of RAR-α expression than the assay control. However, the quality and number of samples were insufficient for statistical analysis. Fold data on the expression levels of both O volvulus DNA and RAR RNA suggested a possible trend toward higher relative RAR-α expression in samples with higher levels of O volvulus DNA ( r2 = 0.25, P = .079). Evidence of a contribution of vitamin A to the pathology of onchocerciasis thus remains elusive. Future studies on the role of retinoids in onchocerciasis will require larger groups of participants as well as careful monitoring of the cold chain and tissue storage procedures in view of the sensitivity of vitamin A to heat and light.

13.
Am J Med Genet B Neuropsychiatr Genet ; 174(3): 269-282, 2017 Apr.
Article in English | MEDLINE | ID: mdl-27781389

ABSTRACT

Alzheimer's disease (AD) is the most common form of dementia and is characterized by impairment in memory, behavioral changes, and gradual loss of autonomy. Since there is a long latent period prior to diagnosis, the aim of this study was to determine whether twenty single nucleotide polymorphisms identified in genome-wide association analyses of AD are associated with cognitive change in 8,320 white and 2,039 African-American middle-aged adults enrolled in the prospective Atherosclerosis Risk in Communities (ARIC) study. Cognition was evaluated using the Delayed Word Recall Test (DWRT; verbal memory), Digit Symbol Substitution Test (DSST; processing speed), and Word Fluency Test (WFT; executive function). General linear models were used to assess mean differences in 6-year change in test scores among individuals categorized by genotype after adjusting for age, gender, and years of education. Addition of the minor allele for rs670139 (MS4A4E), rs9331896 (CLU), and rs12155159 (NME8) was nominally associated with change on the DWRT, DSST, and WFT, respectively, in whites. The ZCWPW1 (rs1476679) and CDS33 (rs3865444) variants were nominally associated with change on the DWRT and WFT in African-Americans. For rs670139 and rs9331896 the association was only significant in individuals bearing at least one APOE ϵ4 allele in stratified analyses. An unweighted genetic risk score aggregating the risk alleles for 15 polymorphisms was not associated with change in cognitive function. Although the AD-associated genetic variants appear to have small effects on early cognitive change, replication will be required to establish whether there is a discernible influence on cognitive status in midlife. © 2016 Wiley Periodicals, Inc.


Subject(s)
Alzheimer Disease/genetics , Membrane Proteins/genetics , Black or African American/genetics , Alleles , Alzheimer Disease/complications , Atherosclerosis/complications , Atherosclerosis/genetics , Atherosclerosis/psychology , Black People/genetics , Clusterin/genetics , Cognition , Cognition Disorders/genetics , Dementia/genetics , Female , Genetic Variation/genetics , Genome-Wide Association Study/methods , Humans , Male , Memory , Middle Aged , Neuropsychological Tests , Polymorphism, Single Nucleotide/genetics , Prospective Studies , Risk Factors , Thioredoxins/genetics , White People/genetics
14.
Graefes Arch Clin Exp Ophthalmol ; 255(3): 509-517, 2017 Mar.
Article in English | MEDLINE | ID: mdl-27632216

ABSTRACT

PURPOSE: Previous studies have yielded conflicting results regarding whether serum lipid levels are associated with retinal hard exudates in diabetic retinopathy. The majority of studies have assessed hard exudates only as a dichotomous trait (presence vs. absence) and included limited numbers of African Americans (AA). The purpose of this study was to determine if there are any associations between serum lipid levels and hard exudates in AA with type 2 diabetes (T2D). METHODS: 890 AA participants with T2D were enrolled from 5 sites. Macular fundus photographs were graded by masked ophthalmologist investigators. Hard exudate areas were measured using a semi-automated algorithm and ImageJ software. Multivariate regression models were used to determine the association between serum lipid levels and (1) presence of hard exudate and (2) area of hard exudate. RESULTS: Presence of hard exudates was associated with higher total cholesterol [(odds ratio (OR) = 1.08, 95 % confidence interval (CI) 1.03-1.13, P = 0.001)] and higher low-density lipoprotein (LDL) cholesterol (OR = 1.08, 95 % CI 1.03-1.14, P = 0.005) in models controlling for other risk factors. Hard exudate area was also associated with both higher total and LDL cholesterol levels (P = 0.04 and 0.01, respectively) in multivariate models controlling for other risk factors. CONCLUSIONS: Higher total and LDL cholesterol were associated with the presence of hard exudates and a greater hard exudate area in AA with T2D. This information can be used to counsel diabetic patients regarding the importance of lipid control to decrease the risk of macular hard exudates.


Subject(s)
Black or African American , Diabetes Mellitus, Type 2/complications , Diabetic Retinopathy/blood , Lipids/blood , Macular Edema/blood , Aged , Biomarkers/blood , Diabetes Mellitus, Type 2/blood , Diabetes Mellitus, Type 2/ethnology , Diabetic Retinopathy/complications , Diabetic Retinopathy/ethnology , Female , Humans , Incidence , Macula Lutea/pathology , Macular Edema/ethnology , Macular Edema/etiology , Male , Middle Aged , Retrospective Studies , Risk Factors , Tomography, Optical Coherence , United States/epidemiology
15.
J Card Fail ; 23(1): 47-55, 2017 Jan.
Article in English | MEDLINE | ID: mdl-27864030

ABSTRACT

BACKGROUND: Cognitive impairment is found in a significant proportion of patients with heart failure (HF). Although cognitive impairment may be a consequence of HF, early signs of cognitive impairment may also indicate subclinical vascular disease, and thus a risk factor for future cardiovascular events. METHODS AND RESULTS: The Atherosclerosis Risk in Communities Study is a prospective cohort study of the development of atherosclerosis. Cox proportional hazards regression was used to examine the association between mean 6-year change in cognitive function and incident HF in 7962 white and 1933 African-American men and women aged 46 to 70 years and free of clinical stroke. Scores were obtained for the Delayed Word Recall Test, the Digit Symbol Substitution Test (DSST), and the Word Fluency Test. There was a significantly increased risk of developing HF during the mean 12.6-year follow-up period after adjustment for age, gender, race, and education for those in the quartile with the greatest decline in DSST scores (hazard ratio [HR] = 1.17, P = .009), and in the quartile with the lowest baseline DSST scores (HR = 1.43, P < .001). CONCLUSIONS: The results suggest that relatively low performance on a test of information processing speed may serve as an indicator of HF risk in middle age.


Subject(s)
Atherosclerosis/complications , Cognition/physiology , Cognitive Dysfunction/epidemiology , Heart Failure/epidemiology , Residence Characteristics , Risk Assessment/methods , Adult , Aged , Atherosclerosis/epidemiology , Cognitive Dysfunction/etiology , Female , Follow-Up Studies , Heart Failure/complications , Humans , Incidence , Male , Middle Aged , Neuropsychological Tests , Prospective Studies , Risk Factors , Time Factors , United States/epidemiology
16.
J Clin Anesth ; 33: 266-72, 2016 Sep.
Article in English | MEDLINE | ID: mdl-27555176

ABSTRACT

STUDY OBJECTIVE: This study aimed to characterize the current practice patterns with cuffed tracheal tubes (CTT) in neonates, infants, and children among members of the Society of Pediatric Anesthesia (SPA). DESIGN AND SETTING: An electronic mail survey was distributed using Survey Monkey to members of SPA between December 2013 and February 2014. Each member was permitted one response. PATIENTS/INTERVENTION/MEASUREMENTS: Not applicable as this is a practice survey study. MAIN RESULTS: A total of 805 (28%) of the 2901 members of the SPA responded. Of the respondents, 88% were from the US, 83% were fellowship trained, 82% practiced pediatric anesthesia >50% of the time, and 65% practiced in academic centers. Eighty-five percent used CTT >50% of the time in children >2 years and 60% used CTT in full-term neonates >50% of the time. Twenty-nine percent reported always using CTT whereas 5% reported never using CTT. Those in practice <5 years, who were fellowship trained or in academic practice used CTT more often in neonates compared with those in practice >20 years, not fellowship trained or in private practice (P< .0001, P= .0003 and P= .0005, respectively). The most common reason for avoiding CTT was concern about post-extubation stridor (39%). Almost 70% of respondents accept the TT if it passes the subglottis without resistance and has a leak at 15 to 20 cmH2O. More than 60% of respondents do not monitor cuff pressures in CTT. CONCLUSION: A majority of SPA members routinely use CTT in neonates, infants and children.


Subject(s)
Anesthesiology/methods , Intubation, Intratracheal/instrumentation , Age Factors , Airway Extubation/adverse effects , Anesthesiology/education , Child , Child, Preschool , Elective Surgical Procedures/statistics & numerical data , Emergency Medical Services , Equipment Design , Humans , Infant , Infant, Newborn , Internship and Residency , Intubation, Intratracheal/statistics & numerical data , Monitoring, Intraoperative , Respiratory Sounds/etiology , Societies, Medical , Surveys and Questionnaires
17.
Psychol Assess ; 28(12): 1674-1683, 2016 12.
Article in English | MEDLINE | ID: mdl-26963590

ABSTRACT

Neuropsychological test batteries are designed to assess cognition in detail by measuring cognitive performance in multiple domains. This study examines the factor structure of tests from the ARIC-NCS battery overall and across informative subgroups defined by demographic and vascular risk factors in a population of older adults. We analyzed neuropsychological test scores from 6,413 participants in the Atherosclerosis Risk in Communities Neurocognitive Study (ARIC-NCS) examined in 2011-2013. Confirmatory factor analysis (CFA) was used to assess the fit of an a priori hypothesized 3-domain model, and fit statistics were calculated and compared to 1- and 2-domain models. Additionally, we tested for stability (invariance) of factor structures among different subgroups defined by diabetes, hypertension, age, sex, race, and education. Mean age of participants was 76 years, 76% were White, and 60% were female. CFA on the a priori hypothesized 3-domain structure, including memory, sustained attention and processing speed, and language, fit the data better (comparative fit index [CFI] = 0.973, root mean square error of approximation [RMSEA] = 0.059) than the 2-domain (CFI = 0.960, RMSEA = 0.070) and 1-domain (CFI = 0.947, RMSEA = 0.080) models. Bayesian information criterion value was lowest, and quantile-quantile plots indicated better fit, for the 3-domain model. Additionally, multiple-group CFA supported a common structure across the tested demographic subgroups, and indicated strict invariance by diabetes and hypertension status. In this community-based population of older adults with varying levels of cognitive performance, the a priori hypothesized 3-domain structure fit the data well. The identified factors were configurally invariant by age, sex, race, and education, and strictly invariant by diabetes and hypertension status. (PsycINFO Database Record


Subject(s)
Cognition , Neuropsychological Tests , Aged , Aged, 80 and over , Bayes Theorem , Demography , Diabetes Mellitus/psychology , Factor Analysis, Statistical , Female , Humans , Hypertension/psychology , Male , Middle Aged , Models, Statistical , Prospective Studies , Risk Factors
18.
Retina ; 36(9): 1622-9, 2016 Sep.
Article in English | MEDLINE | ID: mdl-26991647

ABSTRACT

PURPOSE: To determine whether hyperreflective foci (HF) and macular thickness on spectral domain ocular coherence tomography are associated with lipid levels in patients with Type 2 diabetes. METHODS: Two hundred and thirty-eight participants from four sites had fundus photographs and spectral domain ocular coherence tomography images graded for hard exudates and HF, respectively. Regression models were used to determine the association between serum lipid levels and 1) presence of HF and hard exudates and 2) central subfield macular thickness, central subfield macular volume, and total macular volume. RESULTS: All patients with hard exudates on fundus photographs had corresponding HF on spectral domain ocular coherence tomography, but 57% of patients with HF on optical coherence tomography did not have hard exudates detected in their fundus photographs. Presence of HF was associated with higher total cholesterol (odds ratio = 1.13, 95% confidence interval = 1.01-1.27, P = 0.03) and higher low-density lipoprotein levels (odds ratio = 1.17, 95% confidence interval = 1.02-1.35, P = 0.02) in models adjusting for other risk factors. The total macular volume was also associated with higher total cholesterol (P = 0.009) and triglyceride (P = 0.02) levels after adjusting for other risk factors. CONCLUSION: Higher total and low-density lipoprotein cholesterol were associated with presence of HF on spectral domain ocular coherence tomography. Total macular volume was associated with higher total cholesterol and triglyceride levels.


Subject(s)
Cholesterol, HDL/blood , Cholesterol, LDL/blood , Diabetes Mellitus, Type 2/blood , Exudates and Transudates , Macular Edema/diagnostic imaging , Tomography, Optical Coherence , Black or African American/ethnology , Aged , Case-Control Studies , Diabetes Mellitus, Type 2/ethnology , Diabetic Retinopathy/diagnosis , Female , Glycated Hemoglobin/metabolism , Humans , Macular Edema/blood , Macular Edema/ethnology , Male , Middle Aged , Observer Variation
19.
Ophthalmic Epidemiol ; 23(2): 88-93, 2016.
Article in English | MEDLINE | ID: mdl-26950197

ABSTRACT

PURPOSE: To assess personal and demographic risk factors for proliferative diabetic retinopathy in African Americans with type 2 diabetes. METHODS: In this prospective, non-interventional, cross-sectional case-control study, 380 African Americans with type 2 diabetes were enrolled. Participants were recruited prospectively and had to have either: (1) absence of diabetic retinopathy after ≥10 years of type 2 diabetes, or (2) presence of proliferative diabetic retinopathy when enrolled. Dilated, 7-field fundus photographs were graded using the Early Treatment Diabetic Retinopathy Study scale. Covariates including hemoglobin A1C (HbA1C), blood pressure, height, weight and waist circumference were collected prospectively. Multivariate regression models adjusted for age, sex and site were constructed to assess associations between risk factors and proliferative diabetic retinopathy. RESULTS: Proliferative diabetic retinopathy was associated with longer duration of diabetes (odds ratio, OR, 1.62, p < 0.001), higher systolic blood pressure (OR 1.65, p < 0.001) and insulin use (OR 6.65, p < 0.001) in the multivariate regression analysis. HbA1C was associated with proliferative diabetic retinopathy in the univariate analysis (OR 1.31, p = 0.002) but was no longer significant in the multivariate analysis. CONCLUSIONS: In this case-control study of African Americans with type 2 diabetes, duration of diabetes, systolic hypertension and insulin use were strong risk factors for the development of proliferative diabetic retinopathy. Interestingly, HbA1C did not confer additional risk in this cohort.


Subject(s)
Black or African American/ethnology , Diabetes Mellitus, Type 2/ethnology , Diabetic Retinopathy/ethnology , Aged , Blood Glucose/metabolism , Blood Pressure , Body Weights and Measures , Case-Control Studies , Diabetic Retinopathy/diagnosis , Female , Glycated Hemoglobin/metabolism , Humans , Male , Middle Aged , Prospective Studies , Risk Factors
20.
Fertil Steril ; 105(1): 188-93, 2016 Jan.
Article in English | MEDLINE | ID: mdl-26474735

ABSTRACT

OBJECTIVE: Identify the determinants that influence the patient's decision-making process when deciding to accept or decline preimplantation genetic screening (PGS) in a given IVF cycle. DESIGN: Pilot, retrospective, cross-sectional study that used a questionnaire containing a combination of quantitative and qualitative items. SETTING: Private practice IVF clinic. PATIENT(S): Patients and partners initiating an IVF treatment cycle, both autologous and donor, between October 2012 and January 2015. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Identification of patient perceived determinants and the importance of each on the decision to accept or decline PGS. RESULT(S): Responses from the questionnaire (N = 117) were returned, and of these, 60% accepted PGS. The female response rate was 75% (N = 88) and the male response rate was 25% (N = 29). Ninety-eight percent were Christian (N = 112) and 88% college educated (N = 102) with 39% (N = 40) having some postgraduate education. Sixty-eight percent (N = 79) had no knowledge of PGS before the IVF cycle; however, after provider education, 92% (N = 108) correctly identified that PGS was elective and 93% (N = 109) reported sufficient knowledge to make an informed decision to accept or decline PGS. The additional cost of screening, the provider information and influence, and social support or acceptance from partner, family, and/or friends, were the three statistically significant variables affecting the decision. CONCLUSION(S): This is the first study, to the authors' knowledge, to identify and assess the determinants of the patient decision-making process when presented with the choice of PGS. Several factors contribute to the patient-perceived determinants when choosing to accept or decline PGS, including cost, religious and ethical beliefs and values, social and family support, provider influences, and the past reproductive experience of the patient.


Subject(s)
Choice Behavior , Fertilization in Vitro , Genetic Testing , Health Knowledge, Attitudes, Practice , Patient Acceptance of Health Care , Perception , Preimplantation Diagnosis/methods , Cross-Sectional Studies , Cultural Characteristics , Family Relations , Female , Fertilization in Vitro/economics , Genetic Testing/economics , Health Care Costs , Humans , Male , Patient Participation , Pilot Projects , Predictive Value of Tests , Pregnancy , Preimplantation Diagnosis/economics , Religion and Medicine , Retrospective Studies , Social Support , Surveys and Questionnaires
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