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1.
AJNR Am J Neuroradiol ; 45(6): 781-787, 2024 06 07.
Artigo em Inglês | MEDLINE | ID: mdl-38663986

RESUMO

BACKGROUND AND PURPOSE: Fluorine 18-fluoro-L-dopa ([18F]-FDOPA) was approved by the FDA in 2019 and reimbursed by the Centers for Medicare & Medicaid Services in 2022 for use with PET to visualize dopaminergic nerve terminals in the striatum for evaluation of parkinsonism. We sought to determine the optimal image acquisition time for [18F]-FDOPA PET by evaluating rater-estimated FDOPA positivity and image quality across 4 time points. MATERIALS AND METHODS: Brain PET/CT was acquired 90 minutes following injection of 185 megabecquerel (5 mCi) of [18F]-FDOPA. PET was acquired in list mode for 20 minutes, and data were replayed to represent 15-, 10-, and 5-minute acquisitions. By means of MIMneuro, PET/MR imaging or PET/CT was independently graded for FDOPA positivity and image quality by 2 readers, blinded to the clinical report and diagnosis. Expert neuroradiologist clinical reads were used as the criterion standard. RESULTS: Twenty patients were included, average age 65.6 years, 55% women. Image-quality ratings decreased with shorter acquisition times for both readers (reader 1, ρ = 0.23, P = .044; reader 2, ρ = 0.24, P = .036), but there was no association between abnormality confidence scores and acquisition time (reader 1, ρ = -0.13, P = .250; reader 2, ρ = -0.19, P = .100). There was a high degree of consistency in intra- and interrater agreement and agreement with the expert reads when using acquisition times of ≥10 minutes (maximal confidence score consistency [ρ = 0.92] and interrater agreement [κ = 0.90] were observed at 15 minutes), while image quality was consistently rated as low and FDOPA positivity ratings were inconsistent when using a 5-minute acquisition time. CONCLUSIONS: Our study suggests that image-quality ratings were stable after 15 minutes and that between-subject abnormality detection rates were highly consistent between the 2 readers when acquired for at least 10 and up to 20 minutes but were inconsistent at 5 minutes. Shorter [18F]-FDOPA PET acquisition times may help maximize patient comfort while increasing throughput in the clinical setting.


Assuntos
Di-Hidroxifenilalanina , Transtornos Parkinsonianos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Compostos Radiofarmacêuticos , Humanos , Feminino , Masculino , Di-Hidroxifenilalanina/análogos & derivados , Idoso , Transtornos Parkinsonianos/diagnóstico por imagem , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Pessoa de Meia-Idade , Fatores de Tempo , Encéfalo/diagnóstico por imagem
2.
medRxiv ; 2023 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-37986906

RESUMO

Background: Cognitive impairment is the most common and disabling manifestation of post-acute sequelae of SARS-CoV-2. There is an urgent need for the application of more stringent methods for evaluating cognitive outcomes in research studies. Objective: To determine whether cognitive decline emerges with the onset of COVID-19 and whether it is more pronounced in patients with Post-Acute Sequelae of SARS-CoV-2 or severe COVID-19. Methods: This longitudinal cohort study compared the cognitive performance of 276 patients with COVID-19 to that of 217 controls across four neuroinflammation or vascular disease-sensitive domains of cognition using data collected both before and after the pandemic starting in 2015. Results: The mean age of the COVID-19 group was 56.04±6.6 years, while that of the control group was 58.1±7.3 years. Longitudinal models indicated a significant decline in cognitive throughput ((ß=-0.168, P=.001) following COVID-19, after adjustment for pre-COVID-19 functioning, demographics, and medical factors. The effect sizes were large; the observed changes in throughput were equivalent to 10.6 years of normal aging and a 59.8% increase in the burden of mild cognitive impairment. Cognitive decline worsened with coronavirus disease 2019 severity and was concentrated in participants reporting post-acute sequelae of SARS-CoV-2. Conclusion: COVID-19 was most likely associated with the observed cognitive decline, which was worse among patients with PASC or severe COVID-19. Monitoring patients with post-acute sequelae of SARS-CoV-2 for declines in the domains of processing speed and visual working memory and determining the long-term prognosis of this decline are therefore warranted.

3.
Vaccine ; 41(36): 5322-5329, 2023 08 14.
Artigo em Inglês | MEDLINE | ID: mdl-37460352

RESUMO

BACKGROUND: In December 2020 the U.S. began a massive COVID-19 vaccination campaign, an action that researchers felt could catalyze inequalities in COVID-19 vaccination utilization. While vaccines have the potential to be accessible regardless of social status, the objective of this study was to examine how and when socioeconomic status (SES) and racial/ethnic inequalities would emerge in vaccination distribution. METHODS: Population vaccination rates reported at the county level by the Centers for Disease Control and Prevention across 46 states on 3/30/2021. Correlates included SES, the share of the population who were Black, Hispanic, Female, or aged ≥65 years, and urbanicity (thousands of residents per square mile). Multivariable-adjusted analyses relied on zero-inflated negative binomial regression to estimate the odds of providing any vaccine, and vaccination rate ratios (aVRR) comparing the distribution rate for vaccinations across the U.S. RESULTS: Across the U.S., 16.3 % of adults and 37.9 % of adults aged 65 and older were vaccinated in lower SES counties, while 20.45 % of all adults and 48.15 % of adults aged 65 and older were vaccinated in higher SES counties. Inequalities emerged after 41 days, when < 2 % of Americans were vaccinated. Multivariable-adjusted analyses revealed that higher SES was associated with improved vaccination distribution (aVRR = 1.127, [1.100-1.155], p < 1E-06), while increases in the percent reporting Black or Hispanic race/ethnicity was associated with lower vaccination distribution (aVRR = 0.998, [0.996-0.999], p = 1.03E-04). CONCLUSIONS: Social inequalities in COVID-19 vaccines reflect an inefficient and inequitable distribution of these technologies. Future efforts to improve health should recognize the central role of social factors in impacting vaccine delivery.


Assuntos
COVID-19 , Vacinação , Vacinas , Adulto , Feminino , Humanos , Negro ou Afro-Americano , COVID-19/epidemiologia , COVID-19/prevenção & controle , Vacinas contra COVID-19/uso terapêutico , Fatores Socioeconômicos , Estados Unidos/epidemiologia , Vacinação/estatística & dados numéricos , Vacinação/tendências
4.
World J Nucl Med ; 21(4): 267-275, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36398306

RESUMO

Purpose Incidence of early onset neurocognitive dysfunction has been reported in World Trade Center (WTC) responders. Ongoing studies are investigating the underlying etiology, as we are concerned that an underlying risk of neurodegenerative dementia may be occurring because of their stressful and neurotoxic exposures to particulate matter when they responded to the search and rescue efforts on September 11, 2001. The purpose of this study is to report preliminary results from two ongoing positron emission tomography (PET)/magnetic resonance imaging (MRI) imaging studies investigating the presence of Alzheimer's disease (AD) biomarkers, such as ß-amyloid, tau, and neurodegeneration, and compare our findings to published norms. Methods We present findings on 12 WTC responders diagnosed with either cognitive impairment (CI) or mild cognitive impairment (MCI), now at midlife, who underwent PET/MRI brain imaging as part of ongoing studies. Six responders with CI received [ 18 F] florbetaben (FBB) to detect ß-amyloidosis and six separate responders with MCI received [ 18 F] flortaucipir (FTP) to detect tauopathy. All 12 responders underwent concomitant MRI scans for gray matter volume analysis of neurodegeneration. Results PET analysis revealed 50% FBB and 50% of FTP scans were clinically read as positive and that 50% of FTP scans identified as consistent with Braak's stage I or II. Furthermore, one responder identified as centiloid positive for AD. Gray matter volumes from MRI analyses were compared with age/sex-matched norms (Neuroquant), identifying abnormally low cortical volumes in the occipital and temporal lobes, as well as the inferior temporal gyri and the entorhinal cortex. Conclusion These preliminary results suggest that WTC responders with neurocognitive dysfunction may be at increased risk for a neurodegenerative dementia process as a result of their exposures at September 11, 2001.

5.
Annu Rev Sociol ; 47(1): 131-156, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34949900

RESUMO

Fundamental Cause Theory (FCT) was originally proposed to explain how socioeconomic inequalities in health emerged and persisted over time. The concept was that higher socioeconomic status helped some people to avoid risks and adopt protective strategies using flexible resources - knowledge, money, power, prestige and beneficial social connections. As a sociological theory, FCT addressed this issue by calling on social stratification, stigma, and racism as they affected medical treatments and health outcomes. The last comprehensive review was completed a decade ago. Since then, FCT has been tested, and new applications have extended central features. The current review consolidates key foci in the literature in order to guide future research in the field. Notable themes emerged around types of resources and their usage, approaches used to test the theory, and novel extensions. We conclude that after 25 years of use, there remain crucial questions to be addressed.

6.
World J Nucl Med ; 20(2): 176-184, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34321971

RESUMO

Corticobasal degeneration (CBD) is a rare neurodegenerative disorder presenting with atypical parkinsonian symptoms that characteristically involves the frontoparietal region including the primary sensorimotor cortex, ipsilateral basal ganglia, and thalamus, typically in an asymmetric pattern. We aim to evaluate the metabolic and volumetric abnormalities in patients with clinically suspected CBD phenotypes utilizing hybrid 18F-fluorodeoxyglucose (FDG) positron emission tomography-magnetic resonance (PET/ MR) brain imaging. A retrospective analysis was performed on 75 patients (mean age 74 years, 31 males and 44 females) who underwent 18F-FDG PET/MR imaging (MRI) as part of their clinical dementia workup. Images were obtained using an integrated Siemens mMR 3T PET/MRI scanner. Two board-certified neuroradiologists and a nuclear medicine physician evaluated the metabolic and volumetric data of each hemisphere to assess for symmetric or asymmetric involvement of regions of interest in the subset of patients with suspected CBD. Of the 75 patients, 12 were diagnosed with suspected CBD based on a combination of clinical symptoms, neurocognitive testing, and hybrid neuroimaging findings. Ten of 12 patients (87%) demonstrated asymmetrically decreased FDG uptake involving a single cerebral hemisphere and ipsilateral subcortical structures, whereas two of 12 patients (13%) demonstrated striking hypometabolism of the bilateral sensorimotor cortices. Our study highlights two characteristic patterns of hypometabolism in patients with clinical and neuroimaging findings suggestive of the underlying CBD. The first pattern is asymmetric hypometabolism and volume loss, particularly within the frontoparietal and occipital cortices with involvement of ipsilateral subcortical structures, including the basal ganglia and thalamus. The second, more atypical pattern, is symmetric hypometabolism with striking involvement of the bilateral sensorimotor cortices.

7.
Soc Sci Med ; 268: 113554, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33308911

RESUMO

OBJECTIVES: To quantify the contribution variation in socioeconomic status in predicting the distribution of COVID-19 cases and deaths. METHODS: Analyses used incidence data on daily COVID + case counts from all counties from the initial wave of infections, merged with data from the U.S. census data to measure county-level SES and confounders. Multivariable analyses relied on survival analyses and Poisson regression to examine timing of county-level index cases and of COVID-19 incidence and mortality in infected counties to examine the spread and severity of COVID-19 while adjusting for adjusted for Black race, Hispanic ethnicity, age, gender, and urbanicity. Effect moderation by social distancing parameters was examined. RESULTS: Results indicate that higher SES was associated with earlier incidence of index cases, but that as social distancing took place inequalities in SES inverted so that growth in incidence was slower in higher SES counties, where case-fatality rates were lower. CONCLUSIONS: This study is the first to date to show what happens when an opportunistic disease that could affect anyone meets the American system of inequality and is powerfully shaped by it.


Assuntos
COVID-19/epidemiologia , Disparidades nos Níveis de Saúde , Negro ou Afro-Americano/estatística & dados numéricos , Idoso , COVID-19/etnologia , Feminino , Hispânico ou Latino/estatística & dados numéricos , Humanos , Incidência , Masculino , Fatores Socioeconômicos , Estados Unidos/epidemiologia
8.
J Am Dent Assoc ; 151(12): 935-943, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33228886

RESUMO

BACKGROUND: Decisions about children's oral health care are made by parents. Parents' dental insurance, dental service use, and perceived affordability all influence their children's oral health care. METHODS: Using data from the 2016 National Health Interview Survey, the authors constructed a database of 4,396 nationally representative US children and their linked household adults. The authors assessed the relationship between children's and parents' use of dental services, private and public dental insurance, and deferral of oral health care owing to cost. To adjust for factors that may influence outcomes independently, the authors performed multivariate analyses to consider child, parent, and household characteristics. RESULTS: Children have 2 times the risk of lacking a dental visit in a year if the parent has none, 7 times the risk of reportedly lacking dental coverage if the parent has none, and nearly 10 times the risk of having care deferred owing to cost if the parent finds oral health care unaffordable. Affordability risk factors for children include older age and minority race, whereas protective factors include public insurance, parents with higher educational attainment, and female-led households. Increased oral health care use by children was associated with states that provide more extensive adult Medicaid dental benefits. CONCLUSIONS: Greater parental dental service use, dental coverage, and ability to afford care benefit their children's use of oral health care. PRACTICE IMPLICATIONS: Policies by employers and government that expand quality private and public coverage for adults hold strong promise to improve oral health care for both parents and their children.


Assuntos
Medicaid , Pais , Adulto , Idoso , Criança , Características da Família , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Cobertura do Seguro , Seguro Saúde , Saúde Bucal , Estados Unidos
9.
Heliyon ; 6(3): e03484, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32190753

RESUMO

BACKGROUND: Fundamental cause theory posits that social conditions strongly influence the risk of health risks. This study identifies risk mechanisms that social conditions associated with socioeconomic status (SES) and race/ethnicity shape in the production of colorectal cancer (CRC) mortality. METHODS: Two large datasets in the United States examining behavioral and medical preventive factors (N = 4.63-million people) were merged with population-level mortality data observing 761,100 CRC deaths among 3.31-billion person-years of observation to examine trends in CRC mortality from 1999-2012. Analyses examined the changing role of medical preventions and health behaviors in catalyzing SES and racial/ethnic inequalities in CRC mortality. RESULTS: Lower SES as well as Black, Hispanic, Asian/Pacific Islander, and Native American race/ethnicity were associated with decreased access to age-appropriate screening and/or increased prevalence of behavioral risk factors. Analyses further revealed that SES and racial/ethnic inequalities were partially determined by differences in engagement in two preventive factors: use of colonoscopy, and participation in physical activity. DISCUSSION: Social inequalities were not completely determined by behavioral risk factors. Nevertheless, a more equitable distribution of preventive medicines has the potential to reduce both the risk of, and social inequalities in, CRC mortality.

10.
Biodemography Soc Biol ; 66(3-4): 236-249, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-34622724

RESUMO

The present study examined the demographic correlates of gene expression in a sample of adults (n = 543) from the Study of Midlife in the United States (MIDUS). Inflammatory and antiviral gene sets were operationalized using a priori composite scores and empirically derived co-regulatory gene sets. For both composite scores and co-regulatory gene sets, White/European Americans showed lower while Black/African Americans showed higher expression of genes involved in interferon responses and antibody synthesis. The effects of chronological age on gene expression varied by sex, such that pro-inflammatory gene expression increased with age more rapidly for females than males. The difference between the average expression of inflammatory and antiviral genes also increased with age for females but not males. Results shed light on differential gene expression as a potential physiological correlate for race/ethnicity, age, and sex-related health disparities in adulthood.


Assuntos
Antivirais , Negro ou Afro-Americano , Adulto , Negro ou Afro-Americano/genética , Demografia , Feminino , Expressão Gênica , Humanos , Masculino , Estados Unidos , População Branca/genética
11.
Soc Sci Med ; 199: 49-55, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28454665

RESUMO

There is increasing evidence that racism is a cause of poor health outcomes in the United States, including adverse birth outcomes among Blacks. However, research on the health consequences of racism has faced measurement challenges due to the more subtle nature of contemporary racism, which is not necessarily amenable to assessment through traditionally used survey methods. In this study, we circumvent some of these limitations by examining a previously developed Internet query-based proxy of area racism (Stephens-Davidowitz, 2014) in relation to preterm birth and low birthweight among Blacks. Area racism was measured in 196 designated market areas as the proportion of total Google searches conducted between 2004 and 2007 containing the "n-word." This measure was linked to county-level birth data among Blacks between 2005 and 2008, which were compiled by the National Center for Health Statistics; preterm birth and low birthweight were defined as <37 weeks gestation and <2500 g, respectively. After adjustment for maternal age, Census region, and county-level measures of urbanicity, percent of the Black population, education, and poverty, we found that each standard deviation increase in area racism was associated with relative increases of 5% in the prevalence of preterm birth and 5% in the prevalence of low birthweight among Blacks. Our study provides evidence for the utility of an Internet query-based measure as a proxy for racism at the area-level in epidemiologic studies, and is also suggestive of the role of racism in contributing to poor birth outcomes among Blacks.


Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Disparidades nos Níveis de Saúde , Recém-Nascido de Baixo Peso , Nascimento Prematuro/etnologia , Racismo , Adolescente , Adulto , Feminino , Humanos , Recém-Nascido , Internet , Gravidez , Estados Unidos/epidemiologia , Adulto Jovem
12.
Age Ageing ; 46(3): 493-499, 2017 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-27940567

RESUMO

Objective: social inequalities in health are believed to arise in part because individuals make use of social and economic resources in order to improve survival. In recent years, health literacy has received increased attention as a factor that can help explain differences in health outcomes. However, examination of life course predictors of health literacy has been limited. Methods: life course data from the Wisconsin Longitudinal Study 1957-2011 were used to examine predictors of health literacy in old age (N = 2,122), using the Newest Vital Sign. Generalised structural equation modelling was used to model pathways to health literacy. Results: predictors of health literacy included educational attainment, and adolescent cognitive and non-cognitive skills, and, in men, rate of cognitive decline from middle to later life. Discussion: numerous studies have documented health literacy issues among older adults, and recommendations have been made for ways to improve health literacy for this population. This study reports on risk factors across the life course that are associated with health literacy later in life, identifying possible intervention targets to reduce risk of poor health as people age. Our results suggest that a range of life course factors, beginning in early life, predict health literacy. Further research studying health literacy over the life course is warranted.


Assuntos
Cognição , Envelhecimento Cognitivo/psicologia , Escolaridade , Letramento em Saúde , Disparidades nos Níveis de Saúde , Adolescente , Adulto , Fatores Etários , Idoso , Feminino , Humanos , Renda , Estudos Longitudinais , Masculino , Memória , Pessoa de Meia-Idade , Análise Multivariada , Dinâmica não Linear , Fatores Sexuais , Fatores de Tempo , Wisconsin
13.
Demography ; 53(5): 1631-1656, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27531503

RESUMO

Fundamental cause theory posits that social inequalities in health arise because of unequal access to flexible resources, including knowledge, money, power, prestige, and beneficial social connections, which allow people to avoid risk factors and adopt protective factors relevant in a particular place. In this study, we posit that diseases should also be put into temporal context. We characterize diseases as transitioning through four stages at a given time: (1) natural mortality, characterized by no knowledge about risk factors, preventions, or treatments for a disease in a population; (2) producing inequalities, characterized by unequal diffusion of innovations; (3) reducing inequalities, characterized by increased access to health knowledge; and (4) reduced mortality/disease elimination, characterized by widely available prevention and effective treatment. For illustration, we pair an ideal-types analysis with mortality data to explore hypothesized incidence rates of diseases. Although social inequalities exist in incidence rates of many diseases, the cause, extent, and direction of inequalities change systematically in relation to human intervention. This article highlights opportunities for further development, specifically highlighting the role of stage duration in maintaining social inequalities in cause-specific mortality.


Assuntos
Disparidades nos Níveis de Saúde , Disparidades em Assistência à Saúde/estatística & dados numéricos , Modelos Teóricos , Mortalidade/tendências , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Causas de Morte , Diagnóstico Precoce , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Características de Residência , Fatores de Risco , Fatores Sexuais , Fatores Socioeconômicos , População Branca/estatística & dados numéricos
14.
Malar J ; 13 Suppl 1: 499, 2015 Dec 12.
Artigo em Inglês | MEDLINE | ID: mdl-26651615

RESUMO

BACKGROUND: Approximately 15 % of all deaths in Africa among children under five years old are due to malaria, a preventable and treatable disease. A prevailing sociological theory holds that resources (including knowledge, money, power, prestige, or beneficial social connections) are particularly relevant when diseases are susceptible to effective prevention. This study examines the role of socioeconomic inequalities by broadly predicting malaria knowledge and use of preventive technology among women aged 15-49, and malaria among children aged 6-59 months in Madagascar. METHODS: Data came from women aged 15-49 years (N = 8279) interviewed by Madagascar's 2011/2013 Malaria Indicator Studies, and their children aged under five years (N = 7644). Because geographic location may be associated with socioeconomic factors and exposure to malaria, multilevel models were used to account for unobserved geographic and administrative variation. Models also account for observed social, economic, demographic, and seasonal factors. RESULTS: Prevalence among children four years old and younger was 7.8 %. Results showed that both mother's education and household wealth strongly influence knowledge about and efforts to prevent and treat malaria. Analyses also revealed that the prevalence of malaria among children aged 6-59 months was determined by household wealth (richest vs poorest: OR = 0.25, 95 % CI [0.10, 0.64]) and maternal education (secondary vs none: OR = 0.51, 95 % CI [0.28, 0.95]). CONCLUSIONS: Malaria may be subject to socio-economic forces arising from a broad set of behavioural and geographic determinants, even after adjusting for geographic risk factors and seasonality. Nearly 21 % of the sample lacked primary schooling. To improve malaria reduction efforts, broad-based interventions may need to attack inequalities to ensure that knowledge, prevention and treatment are improved among those who are most vulnerable.

15.
J Health Soc Behav ; 56(3): 323-40, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26315501

RESUMO

Education is a fundamental cause of social inequalities in health because it influences the distribution of resources, including money, knowledge, power, prestige, and beneficial social connections, that can be used in situ to influence health. Recent studies have highlighted early-life cognition as commonly indicating the propensity for educational attainment and determining health and age of mortality. Health behaviors provide a plausible mechanism linking both education and cognition to later-life health and mortality. We examine the role of education and cognition in predicting smoking, heavy drinking, and physical inactivity at midlife using data from the Wisconsin Longitudinal Study (N = 10,317), National Survey of Health and Development (N = 5,362), and National Childhood Development Study (N = 16,782). Adolescent cognition was associated with education but was inconsistently associated with health behaviors. Education, however, was robustly associated with improved health behaviors after adjusting for cognition. Analyses highlight structural inequalities over individual capabilities when studying health behaviors.


Assuntos
Cognição , Comportamentos Relacionados com a Saúde , Fumar , Classe Social , Escolaridade , Feminino , Humanos , Estudos Longitudinais , Masculino , Fatores Socioeconômicos
16.
Alzheimers Dement (Amst) ; 1(3): 303-310, 2015 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-26309906

RESUMO

BACKGROUND: Education has been robustly associated with cognitive reserve and dementia, but not with the rate of cognitive aging, resulting in some confusion about the mechanisms of cognitive aging. This study uses longitudinal data to differentiate between trajectories indicative of healthy versus pathological cognitive aging. METHODS: Participants included 9,401 Health and Retirement Study respondents aged 55 and older who completed cognitive testing regularly over 17.3 years until most recently in 2012. Individual-specific random change-point modeling was used to identify age of incident pathological decline; acceleration is interpreted as indicating likely onset of pathological decline when it is significant and negative. RESULTS: These methods detect incident dementia diagnoses with specificity/sensitivity of 89.3%/44.3%, 5.6 years prior to diagnosis. Each year of education was associated with 0.09 (95% CI, 0.087-0.096; P<0.001) standard deviation higher baseline cognition and delayed onset of cognitive pathology (HR, 0.98; 95% CI, 0.96-0.99; P=0.006). CONCLUSION: Longitudinal random change-point modeling was able to reliably identify incident dementia. Accounting for incident cognitive pathology, we find that education predicts cognitive capability and delayed onset pathological declines.

17.
J Craniofac Surg ; 26(4): 1229-33, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26080163

RESUMO

The present study aims to determine the risk of early secondary nasal revisions in patients with complete unilateral and bilateral cleft lip and palate (U/BCLP) treated with and without nasoalveolar molding (NAM) and examine the associated costs of care. A retrospective cohort study from 1990 to 1999 was performed comparing the risk of early secondary nasal revision surgery in patients with a CLP treated with NAM and surgery (cleft lip repair and primary surgical nasal reconstruction) versus surgery alone in a private practice and tertiary level clinic. The NAM treatment group consisted of 172 patients with UCLP and 71 patients with BCLP, whereas the non-NAM-prepared group consisted of 28 patients with UCLP and 5 with BCLP. The risk of secondary nasal revision for patients with UCLP was 3% in the NAM group and 21% in the non-NAM group. The risk of secondary nasal revision for patients with BCLP was 7% in the NAM group compared with 40% in the non-NAM group. Using multicenter averages, the non-NAM revision rates were calculated at 37.8% and 48.5% for U/BCLP, respectively. Applying these risks of revision, NAM treatment led to an estimated savings of between $491 and $4893 depending on the type of cleft. In conclusion, NAM can reduce the number of early secondary nasal revision surgeries and, therefore, reduce the overall cost of care.


Assuntos
Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Rinoplastia/métodos , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Masculino , Reoperação , Estudos Retrospectivos , Fatores de Tempo
18.
PLoS One ; 10(4): e0122963, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25909964

RESUMO

Racial disparities in health are well-documented and represent a significant public health concern in the US. Racism-related factors contribute to poorer health and higher mortality rates among Blacks compared to other racial groups. However, methods to measure racism and monitor its associations with health at the population-level have remained elusive. In this study, we investigated the utility of a previously developed Internet search-based proxy of area racism as a predictor of Black mortality rates. Area racism was the proportion of Google searches containing the "N-word" in 196 designated market areas (DMAs). Negative binomial regression models were specified taking into account individual age, sex, year of death, and Census region and adjusted to the 2000 US standard population to examine the association between area racism and Black mortality rates, which were derived from death certificates and mid-year population counts collated by the National Center for Health Statistics (2004-2009). DMAs characterized by a one standard deviation greater level of area racism were associated with an 8.2% increase in the all-cause Black mortality rate, equivalent to over 30,000 deaths annually. The magnitude of this effect was attenuated to 5.7% after adjustment for DMA-level demographic and Black socioeconomic covariates. A model controlling for the White mortality rate was used to further adjust for unmeasured confounders that influence mortality overall in a geographic area, and to examine Black-White disparities in the mortality rate. Area racism remained significantly associated with the all-cause Black mortality rate (mortality rate ratio = 1.036; 95% confidence interval = 1.015, 1.057; p = 0.001). Models further examining cause-specific Black mortality rates revealed significant associations with heart disease, cancer, and stroke. These findings are congruent with studies documenting the deleterious impact of racism on health among Blacks. Our study contributes to evidence that racism shapes patterns in mortality and generates racial disparities in health.


Assuntos
Negro ou Afro-Americano , Internet , Racismo , Adulto , Idoso , Causas de Morte , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Mortalidade , Análise Espaço-Temporal , Estados Unidos
19.
J Craniofac Surg ; 26(1): 71-5, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25534051

RESUMO

Obtaining an esthetic and functional primary surgical repair in patients with complete cleft lip and palate (CLP) can be challenging because of tissue deficiencies and alveolar ridge displacement. This study aimed to describe surgeons' assessments of presurgical deformity and predicted surgical outcomes in patients with complete unilateral and bilateral CLP (UCLP and BCLP, respectively) treated with and without nasoalveolar molding (NAM). Cleft surgeon members of the American Cleft Palate-Craniofacial Association completed online surveys to evaluate 20 presurgical photograph sets (frontal and basal views) of patients with UCLP (n = 10) and BCLP (n = 10) for severity of cleft deformity, quality of predicted surgical outcome, and likelihood of early surgical revision. Five patients in each group (UCLP and BCLP) received NAM, and 5 patients did not receive NAM. Surgeons were masked to patient group. Twenty-four percent (176/731) of surgeons with valid e-mail addresses responded to the survey. For patients with UCLP, surgeons reported that, for NAM-prepared patients, 53.3% had minimum severity clefts, 58.9% were anticipated to be among their best surgical outcomes, and 82.9% were unlikely to need revision surgery. For patients with BCLP, these percentages were 29.8%, 38.6%, and 59.9%, respectively. Comparing NAM-prepared with non-NAM-prepared patients showed statistically significant differences (P < 0.001), favoring NAM-prepared patients. This study suggests that cleft surgeons assess NAM-prepared patients as more likely to have less severe clefts, to be among the best of their surgical outcomes, and to be less likely to need revision surgery when compared with patients not prepared with NAM.


Assuntos
Processo Alveolar/cirurgia , Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Nariz/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Processo Alveolar/anormalidades , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Masculino , Aparelhos Ortopédicos , Prognóstico , Procedimentos de Cirurgia Plástica/instrumentação
20.
Can J Aging ; 33(4): 413-25, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25222477

RESUMO

This study examined the socioeconomic pathways linking partnership status to physical functioning, assessed using objective measures of late life physical functioning, including peak flow and grip strength. Using Wave 4 of the Survey of Health, Ageing and Retirement in Europe (SHARE), we ran multilevel models to examine the relationship between partnership status and physical function in late life, adjusting for social-network characteristics, socioeconomic factors, and health behaviours. We found a robust relationship between partnership status and physical function. Incorporating social-network characteristics, socioeconomic factors, and health behaviours showed independent robust relationships with physical function. Co-variates attenuated the impact of cohabitation, separation, and widowhood on physical function; robust effects were found for singlehood and divorce. Sex-segregated analyses suggest that associations between cohabitation, singlehood, divorce, and widowhood were larger for men than for women. Results suggest that social ties are important to improved physical function.


Assuntos
Envelhecimento/fisiologia , Força da Mão/fisiologia , Comportamentos Relacionados com a Saúde , Estado Civil/estatística & dados numéricos , Apoio Social , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/psicologia , Divórcio/estatística & dados numéricos , Europa (Continente) , Feminino , Humanos , Masculino , Casamento/estatística & dados numéricos , Pessoa de Meia-Idade , Análise Multinível , Pico do Fluxo Expiratório , Fatores Sexuais , Fatores Socioeconômicos , Viuvez/estatística & dados numéricos
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