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1.
Health Lit Res Pract ; 7(3): e154-e164, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37698848

RESUMO

BACKGROUND: The definition of health literacy has recently expanded beyond the idea of individual skills to include the system and environment the individual interacts with to receive care, known as organizational health literacy (OHL). However, neither the prevalence of OHL nor the impact of OHL on individuals' perceptions of their health and healthcare have been examined in New York's Medicaid managed care population. OBJECTIVE: This study aimed to estimate the prevalence of organizational health literacy in the New York State (NYS) Medicaid Managed Care (MMC) program. METHODS: A brief measure to assess organizational health literacy was developed from responses to two questions in the 2018 NYS Consumer Assessment of Healthcare Providers and Systems (CAHPS) survey. Generalized Estimating Equation models were developed to analyze the association between organizational health literacy and three aspects of perceptions of health and health care, controlling for demographic differences and clustering effects from health insurance plans. Missing data were handled using multiple imputation. KEY RESULTS: Among 3,598 members included in the study, 20% of the MMC members reported inadequate organizational health literacy. These members were more likely to be older, less educated, from racial and ethnic minority groups, and less fluent with English. They are more likely to have poorer self-reported health (odds ratio [OR] 1.49), lower perceived access to health care (OR 6.97), and lower satisfaction with their health care (OR 6.49) than members who did not report inadequate organizational health literacy. CONCLUSIONS: Our results suggest that a proportion of the NYS MMC population faces inadequate organizational health literacy, which can present a barrier to health care access and result in patients having a significantly poorer health care experience. Using an existing data source that is part of existing data collection allows for routine assessment of organizational health literacy, which can help inform health plans about areas for potential improvement. [HLRP: Health Literacy Research and Practice. 2023;7(3):e154-e164.].


PLAIN LANGUAGE SUMMARY: Our study looked at the impact of organizational health literacy on the perceptions of health and health care of NYS Medicaid Managed Care population. We used existing CAHPS questions to assess organizational health literacy and found that lower organizational health literacy led to worse perceptions of health and health care. This article illustrates an opportunity to demonstrate how organizational health literacy can be measured with annual CAHPS collections.


Assuntos
Etnicidade , Letramento em Saúde , Estados Unidos , Humanos , Medicaid , Grupos Minoritários , New York
2.
J Racial Ethn Health Disparities ; 10(3): 1478-1491, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-35595917

RESUMO

Asian Americans are the fastest growing racial group in the USA, but their health disparities are often overlooked. Although their needs for transplantable organs are substantial, they have the lowest rates of organ donation per million compared to other Americans by race. To better understand Asian Americans' disposition toward organ donation, a self-administered survey was developed based on formative data collection and guidance from a Community Advisory Board composed of Asian American stakeholders. The instrument was deployed online, and quota sampling based on the 2017 American Community Survey was used to achieve a sample representative (N = 899) of the Asian American population. Bivariate tests using logistic regression and the chi-square test of independence were performed. Over half (58.1%) of respondents were willing to be organ donors. A majority (81.8%) expressed a willingness to donate a family member's organs, but enthusiasm depended on the family member's donor wishes. Only 9.5% of respondents indicated that the decision to donate their organs was theirs alone to make; the remainder would involve at least one other family member. Other key sociodemographic associations were found. This study demonstrates both the diversity of Asian Americans but also the centrality of the family's role in making decisions about organ donation. Practice and research considerations for the field are also presented.


Assuntos
Asiático , Obtenção de Tecidos e Órgãos , Humanos , Asiático/psicologia , Asiático/estatística & dados numéricos , Família , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos e Questionários , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Doadores de Tecidos
3.
PLoS One ; 17(11): e0276770, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36322554

RESUMO

The HIV epidemic continues to grow in Kazakhstan and HIV stigma remains a major barrier to HIV prevention and treatment in the country. HIV stigma in healthcare setting may also discourage people living with HIV (PLHIV) from getting the care needed. Therefore, studying the attitudes of healthcare workers towards PLHIV is important and requires well-constructed measurement tools adapted to the specific cultural context. In our study, we aimed to adapt and re-validate a brief questionnaire on HIV stigma among healthcare workers in Almaty, Kazakhstan. We held focus group discussions to obtain input on an existing questionnaire and surveyed 448 primary healthcare providers to psychometrically evaluate the scale. The final HIV-stigma scale consisted of 15 items, 6 of them measuring negative opinions about PLHIV and the rest assessing stigmatizing health facility policies towards PLHIV. Both HIV-stigma subscales demons6trated adequate psychometric properties (with Cronbach's alpha α = 0.57 for the first and α = 0.86 for the second subscale, and with factor loadings >0.35 within each subscale). High numbers of respondents holding negative attitudes towards PLHIV, detected in this sample (87%; n = 380), may suggest the need for immediate actions addressing HIV stigma in healthcare in Kazakhstan.


Assuntos
Infecções por HIV , Humanos , Cazaquistão , Infecções por HIV/epidemiologia , Estigma Social , Atenção à Saúde , Instalações de Saúde , Inquéritos e Questionários
4.
Respir Med ; 196: 106819, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35358810

RESUMO

INTRODUCTION: The impact of common measures to assess sarcoidosis have not been compared longitudinally to outcomes that are meaningful to patients. We prospectively examined the relationship of baseline measurements of sarcoidosis status to outcomes of interest to patients longitudinally over 6 months. METHODS: Sarcoidosis patients cared for at 6 US medical centers were "phenotyped" at baseline with measurements of pulmonary function, organ involvement, health related quality of life (HRQoL) instruments, and their anti-sarcoidosis treatment history. These patients were followed for 6 months by monitoring outcomes of interest to patients (OIPs) including steps walked, calories expended, sleep, HRQoL measures, workdays missed and health care utilization. For each baseline phenotypic measurement, patients were dichotomized into two groups above and below a specified cutoff value. The area under the OIP versus time curve was compared between these two groups. RESULTS: The cutoff values for many baseline phenotypic measures distinguished the patients into groups with significantly different 6-month OIPs. The chosen cutoff for the patient global estimate of health status distinguished the most OIPs (13/15). The 6-min walk distance cutoff was associated with more OIPs than spirometric measures. All of the HRQOL measure cutoffs were associated with many OIPs, although most of them were other HRQOL measures. INTERPRETATION: Cutoffs for most of the phenotypic measures used to assess sarcoidosis distinguished groups of sarcoidosis patients with differing OIPs over the subsequent 6 months. The patients' global assessment of their disease was the most accurate of these measures. CLINICAL TRIAL REGISTRATION NUMBER: NCT04342403.


Assuntos
Qualidade de Vida , Sarcoidose , Nível de Saúde , Humanos , Sarcoidose/complicações , Espirometria , Caminhada
5.
Demography ; 56(4): 1327-1348, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31240501

RESUMO

This study examines Muslim-non-Muslim disparities in locational attainment. We pool data from the 2004, 2006, and 2008 waves of the Public Health Management Corporation's Southeastern Pennsylvania Household Survey. These data contain respondents' religious identities and are geocoded at the census-tract level, allowing us to merge American Community Survey data and examine neighborhood-level outcomes to gauge respondents' locational attainment. Net of controls, our multivariate analyses reveal that among blacks and nonblacks, Muslims live in neighborhoods that have significantly lower shares of whites and greater representations of blacks. Among blacks, Muslims are significantly less likely than non-Muslims to reside in suburbs. The Muslim disadvantages for blacks and nonblacks in neighborhood poverty and neighborhood median income, however, become insignificant. Our results provide support for the tenets of the spatial assimilation and place stratification models and suggest that Muslim-non-Muslim disparities in locational attainment define a new fault line in residential stratification.


Assuntos
Islamismo , Áreas de Pobreza , Características de Residência/estatística & dados numéricos , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Philadelphia , Fatores Socioeconômicos , Análise Espacial
6.
Environ Int ; 127: 473-486, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30981018

RESUMO

Experimental and observational data implicate phthalates as developmental toxicants. However, few data are available to assess the maternal risks of gestational exposure by race and infant sex. To begin to address this data gap, we characterized associations between maternal urinary phthalate metabolites and birth outcomes among African American and white mothers from a southeastern U.S. population. We enrolled pregnant African American (n = 152) and white (n = 158) women with singleton live births between 18 and 22 weeks gestation. We measured phthalate metabolites (mono-n-butyl phthalate (MBP), monoisobutyl phthalate (MiBP), monobenzyl phthalate (MBzP), mono(2-ethylhexyl) phthalate (MEHP), mono(2-ethyl-5-oxohexyl) phthalate (MEOHP), mono-2-ethyl-5-hydroxyhexyl phthalate (MEHHP), monoethyl phthalate (MEP), monomethyl phthalate (MMP), and the sums of DEHP (ΣDEHP) and DBP (ΣDBP) metabolites) in up to two gestational urine specimens from mothers, and evaluated confounder-adjusted associations per natural log unit greater concentration with birth weight for gestational age z-score, small for gestational age (SGA; <10th %tile), preterm birth (PTB; <37 weeks gestation), and low birth weight (LBW; <2500 g). We also tested for interactions by maternal race and infant sex. We found that lower z-scores were associated with greater MiBP (ß = -0.28; 95% CI: -0.54, -0.02) and MMP (ß = -0.30; 95% CI: -0.52, -0.09) concentrations, while MEP interacted with race (p = 0.04), indicating an association among whites (ß = -0.14; 95% CI: -0.28, 0.001) but not among African Americans (ß = 0.05; 95% CI = -0.09, 0.19). Greater MiBP (OR = 2.82; 95% CI: 1.21, 6.56) and MEOHP (OR = 2.80; 95% CI: 1.05, 7.42) were associated with an overall higher SGA risk, greater MEHP was associated with higher SGA risk (p = 0.10) in whites (OR = 3.26 95% CI: 0.64, 16.56) but not in African Americans (OR = 0.71 95% CI: 0.07, 7.17), and the associations for MiBP (p = 0.02) and ΣDBP (p = 0.02) varied by infant sex. We detected interactions for PTB in which African Americans were at higher risk than whites for greater MiBP (p = 0.08) and MEP (p = 0.02) although lower risk for greater MEHP (p = 0.09). Greater MEP was associated with an overall higher LBW risk (OR = 1.33; 95% CI: 0.95, 1.86), and males were at higher risk than females with greater MBP (p = 0.002), MiBP (p = 0.02), MBzP (p = 0.01), MEP (p = 0.002), MMP (p = 0.09), and ΣDBP (p = 0.01) concentrations. Overall, our results suggest that gestational phthalate exposure is associated with adverse maternal birth outcomes, and that the effects vary by maternal race and infant sex.


Assuntos
Desenvolvimento Fetal , Exposição Materna , Adolescente , Adulto , Peso ao Nascer , Feminino , Humanos , Masculino , Ácidos Ftálicos , Gravidez , Adulto Jovem
7.
Lung ; 196(1): 43-48, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29147774

RESUMO

INTRODUCTION: The significance of mediastinal lymphadenopathy in bacterial pneumonia is unclear. METHODS: We performed a retrospective analysis of mediastinal lymph node size determined by chest CT in patients with bacteremic pneumococcal pneumonia. All patients who had positive blood cultures for streptococcus pneumonia over an 11-year period and had a chest CT scan (index CT) within 2 weeks of the positive blood culture were included in the study. Two thoracic radiologists and one pulmonologist independently examined the index CT plus any chest CT scans performed prior (pre-CT) or after (post-CT) the bacteremic episode. RESULTS: The study cohort of 49 patients was 57% male, 65% White, with mean age of 53 (SD = 20) years. Mediastinal lymphadenopathy was detected in 25/49 (51%) of the cases. The mean size of the largest mediastinal lymph node in short axis was 0.99 (SD = 0.71), ranging from 0.0 to 2.05 cm. There was no correlation noted between the number of lobes involved with pneumonia, and the size of the largest mediastinal lymph node (p = 0.33) or the number of pathologically enlarged mediastinal lymph nodes (p = 0.08). There was a statistically significant increase in the mean size of the largest lymph node between the pre-CT and index-CT group (p = 0.02), and decrease between the index-CT group and the post-CT (p = 0.03). CONCLUSION: Pneumococcal pneumonia with bacteremia is associated with mild mediastinal lymph node enlargement. The presence of marked mediastinal lymphadenopathy (short axis LN size > 2 cm) should not be assumed from pneumococcal pneumonia.


Assuntos
Bacteriemia/complicações , Linfonodos/patologia , Linfadenopatia/microbiologia , Linfadenopatia/patologia , Pneumonia Pneumocócica/complicações , Adulto , Idoso , Feminino , Humanos , Linfonodos/diagnóstico por imagem , Linfadenopatia/diagnóstico por imagem , Masculino , Mediastino , Pessoa de Meia-Idade , Tamanho do Órgão , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
8.
Int Arch Occup Environ Health ; 91(2): 145-154, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29027000

RESUMO

PURPOSE: Perfluoroalkyl substances (PFASs) are environmentally persistent amphiphilic compounds. Exposure to two PFASs, perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) is linked to specific occupations and industries. This study examines the contribution of past occupational PFAS exposure to serum PFOS and PFOA levels among 154 older adults in New York State. METHODS: Serum PFOS and PFOA levels were compared to data from the National Health and Nutrition Examination Survey (NHANES). Potential occupational exposure to any PFAS was determined from work histories, reviewed by an industrial hygienist, and assessed in relation to current serum PFOS and PFOA levels using exposure probability, duration and cumulative exposure. RESULTS: We observed 25% higher serum PFOS and 80% higher PFOA levels in study participants compared to NHANES. No participants reported PFAS chemical manufacturing work, but n = 68 reported work in occupations and industries known to use PFASs. We found that participants with high cumulative workplace exposure had 34% higher serum PFOS levels compared to participants without occupational exposure, adjusted for age, sex and income. Serum PFOS levels were 26% higher for participants with longer occupational exposure durations. The probability of occupational PFAS exposure metric was not associated with serum PFOS. Serum PFOA was not associated with any measure of occupational exposure. CONCLUSION: Occupational exposure may contribute to total PFOS body burden in this study population, even among workers not directly involved in manufacturing PFASs. PFAS exposure assessments should evaluate the workplace as a potential source, even when workplace exposures are assumed to be low or moderate.


Assuntos
Ácidos Alcanossulfônicos/sangue , Caprilatos/sangue , Exposição Ambiental/análise , Fluorocarbonos/sangue , Inquéritos Nutricionais/estatística & dados numéricos , Fatores Etários , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , New York , Exposição Ocupacional/análise , Estudos Retrospectivos , Fatores Sexuais , Fatores Socioeconômicos , Fatores de Tempo
9.
Lung ; 195(5): 587-594, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28707109

RESUMO

PURPOSE: Cough is a common symptom of pulmonary sarcoidosis. We analyzed the severity of cough and factors associated with cough in a university sarcoidosis clinic cohort. METHODS: Consecutive patients completed the Leicester Cough Questionnaire (LCQ) and a cough visual analog scale (VAS). Clinical and demographic data were collected. Means of the LCQ were analyzed in patients who had multiple visits in terms of constant variables (e.g., race, sex). RESULTS: 355 patients completed the LCQ and VAS at 874 visits. Cough was significantly worse in blacks than whites as determined by the LCQ-mean (16.5 ± 2.6 vs. 17.8 ± 3.0, p < 0.001) and VAS-mean (3.8 ± 3.0 vs. 2.0 ± 2.6, p < 0.0001). Cough was worse in women than men as measured by the VAS-mean (2.7 ± 2.9 vs. 2.2 ± 2.7, p = 0.002), one of the LCQ-mean domains (LCQ-Social-mean 5.4 ± 0.9 vs. 5.2 ± 1.0, p = 0.03), but not the total LCQ-mean score. Cough was not significantly different by either measure in terms of smoking status, age, or spirometric parameter (FVC % predicted, FEV1 % predicted, FEV1/FVC). In a multivariable linear regression analysis, cough was significantly worse in blacks than whites and in pulmonary sarcoidosis than non-pulmonary sarcoidosis with both cough measures, in women than men for the VAS only, and not for spirometric parameters, Scadding stage, or age. The LCQ and VAS were strongly correlated. CONCLUSIONS: In a large university outpatient sarcoidosis cohort, cough was worse in blacks than whites. Cough was not statistically significantly different in terms of age, spirometric measures, Scadding stage, or smoking status. The LCQ correlated strongly with a visual analog scale for cough.


Assuntos
Tosse/fisiopatologia , Sarcoidose Pulmonar/fisiopatologia , Adulto , Negro ou Afro-Americano , Fatores Etários , Idoso , Tosse/etnologia , Tosse/etiologia , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Sarcoidose Pulmonar/complicações , Fatores Sexuais , Inquéritos e Questionários , Escala Visual Analógica , População Branca
10.
Respir Med ; 109(4): 526-31, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25698652

RESUMO

BACKGROUND: Both sarcoidosis and its treatment may worsen health related quality of life (HRQoL). We performed a propensity analysis of sarcoidosis-specific HRQoL patient reported outcome measures (PRO) to disentangle the effects of sarcoidosis and corticosteroid therapy on HRQoL in sarcoidosis outpatients. METHODS: Consecutive outpatient sarcoidosis patients were administered modules from two sarcoidosis-specific HRQoL PROs: the Sarcoidosis Health Questionnaire (SHQ) and the Sarcoidosis Assessment Tool (SAT). Patients were divided into those that received ≤500 mg of prednisone (PRED-LOW) versus >500 mg of prednisone (PRED-HIGH) over the previous year. SAT and SHQ scores were initially compared in the two corticosteroid groups. Then a multivariate analysis was performed using a propensity score analysis adjusted for race, age, gender and the severity of illness. RESULTS: In the unadjusted analysis, the PRED-HIGH group demonstrated the following worse HRQoL scores compared to the LOW-PRED group: SHQ Daily (p = 0.02), SAT satisfaction (p = 0.03), SAT daily activities (p = 0.03). In the propensity analysis, the following domains demonstrated worse HRQoL in the PRED-HIGH group than the PRED-LOW group: SAT fatigue (p < 0.0001), SAT daily activities (p = 0.03), SAT satisfaction (p = 0.03). All these differences exceeded the established minimum important difference for these SAT domains. The SHQ Physical score appeared to demonstrate a borderline improved HRQoL in the PRED-HIGH versus the PRED-LOW group (p = 0.05).). In a post-hoc exploratory analysis, the presence of cardiac sarcoidosis may have explained the quality of life differences between the two corticosteroid groups. CONCLUSIONS: Our cohort of sarcoidosis clinic patients who received ≤500 mg of prednisone in the previous year had an improved HRQoL compared to patients receiving >500 mg on the basis of two sarcoidosis-specific PROs after adjusting for severity of illness. These data support the need to measure HRQoL in sarcoidosis trials, and suggest that the search should continue for effective alternative medications to corticosteroids.


Assuntos
Qualidade de Vida , Sarcoidose Pulmonar , Atividades Cotidianas , Corticosteroides/administração & dosagem , Corticosteroides/efeitos adversos , Adulto , Anti-Inflamatórios/administração & dosagem , Anti-Inflamatórios/efeitos adversos , Cardiomiopatias/diagnóstico , Cardiomiopatias/etiologia , Relação Dose-Resposta a Droga , Fadiga/etiologia , Feminino , Disparidades nos Níveis de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Pontuação de Propensão , Sarcoidose , Sarcoidose Pulmonar/complicações , Sarcoidose Pulmonar/diagnóstico , Sarcoidose Pulmonar/tratamento farmacológico , Sarcoidose Pulmonar/fisiopatologia , Sarcoidose Pulmonar/psicologia , Índice de Gravidade de Doença , Resultado do Tratamento , Estados Unidos
11.
J Racial Ethn Health Disparities ; 1(4): 309-318, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25506543

RESUMO

INTRODUCTION: Few studies have analyzed the cohort effects of lifecourse socioeconomic position (SEP) on racial disparities in body mass index (BMI) trajectories. We assessed the contribution of lifecourse SEP on racial differences in BMI trajectories among two different age cohorts of women. METHODS: Four waves of the Americans' Changing Lives' study (1986-2002) were used to compute BMI trajectories for 2194 Black and White women. Multivariable associations of lifecourse SEP variables (father's education, perceived childhood family status, education, income, wealth and financial security) with Wave 1(W1) BMI and BMI change were assessed using mixed models. RESULTS: Black women had higher W1 BMI than White women in both cohorts (women <40 years in 1986 (+2.6 kg/m2 (95%CI: +1.71, +3.53)) and women>=40 in 1986 (+2.68 kg/m2 (95%CI:+2.12,3.24))); Black women in the younger cohort had a higher change in BMI (+0.73 kg/m2/year (95%CI:+0.17,+1.29)). High education was associated with lower W1 BMI in both cohorts (-1.34 (95%CI:-2.53,-0.15) and -1.08 kg/m2 (95%CI:-0.50,-1.65), respectively). Among the younger cohort, high income was associated with lower W1 BMI (-0.78kg/m2/unit log income (95%CI:-1.32,-0.25)) while among the older cohort, high father's education (-0.78 kg/m2 (95%CI:-0.06,-1.50)) and higher wealth (-0.26 kg/m2(95%CI:-0.43,-0.08))were associated with low W1 BMI. Racial disparities in W1 BMI were attenuated by 20-25% while those for BMI change remained unexplained on adjustment for lifecourse SEP. CONCLUSION: In this large population-based dataset, results suggest that the contribution of lifecourse SEP to racial disparities in BMI may be established early in adulthood.

12.
Prev Med ; 67: 17-23, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24967954

RESUMO

OBJECTIVE: The aim of this study is to evaluate the association between lifecourse socioeconomic position (SEP) and changes in body mass index (BMI), and assess disparities in these associations across racial/ethnic groups. METHODS: With longitudinal data from 4 waves of the Americans' Changing Lives Study (1986-2002), we employed mixed-effects modeling to estimate BMI trajectories for 1174 Blacks and 2323 White adults. We also estimated associations between these trajectories and lifecourse SEP variables, including father's education, perceived childhood SEP, own education, income, wealth, and financial security. RESULTS: Blacks had higher baseline BMIs, and steeper increases in BMI, compared to Whites. Childhood SEP, as measured by high father's education, was associated with lower baseline BMI among Whites. High education was associated with a lower baseline BMI within both race and sex categories. Income had contrasting effects among men and women. Higher income was associated with higher BMI only among males. Associations between indicators of SEP and BMI trajectories were only found for Whites. CONCLUSIONS: Our study demonstrates that lifecourse SEP may influence adult BMI differently within different racial and sex groups.


Assuntos
Índice de Massa Corporal , Obesidade/etnologia , Grupos Raciais , Fatores Socioeconômicos , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Fatores Etários , Idoso , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , População Branca/estatística & dados numéricos , Adulto Jovem
13.
Stat Med ; 30(29): 3447-60, 2011 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-21976366

RESUMO

The multivariate normal (MVN) distribution is arguably the most popular parametric model used in imputation and is available in most software packages (e.g., SAS PROC MI, R package norm). When it is applied to categorical variables as an approximation, practitioners often either apply simple rounding techniques for ordinal variables or create a distinct 'missing' category and/or disregard the nominal variable from the imputation phase. All of these practices can potentially lead to biased and/or uninterpretable inferences. In this work, we develop a new rounding methodology calibrated to preserve observed distributions to multiply impute missing categorical covariates. The major attractiveness of this method is its flexibility to use any 'working' imputation software, particularly those based on MVN, allowing practitioners to obtain usable imputations with small biases. A simulation study demonstrates the clear advantage of the proposed method in rounding ordinal variables and, in some scenarios, its plausibility in imputing nominal variables. We illustrate our methods on a widely used National Survey of Children with Special Health Care Needs where incomplete values on race posed a valid threat on inferences pertaining to disparities.


Assuntos
Inquéritos Epidemiológicos/estatística & dados numéricos , Análise Multivariada , Avaliação das Necessidades/estatística & dados numéricos , Distribuição Normal , Adolescente , Viés , Criança , Pré-Escolar , Simulação por Computador , Feminino , Pesquisas sobre Atenção à Saúde/estatística & dados numéricos , Disparidades nos Níveis de Saúde , Disparidades em Assistência à Saúde/estatística & dados numéricos , Humanos , Lactente , Masculino , Grupos Raciais/estatística & dados numéricos , Software/estatística & dados numéricos
14.
Stat Med ; 30(10): 1137-56, 2011 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-21341300

RESUMO

In designed longitudinal studies, information from the same set of subjects are collected repeatedly over time. The longitudinal measurements are often subject to missing data which impose an analytic challenge. We propose a functional multiple imputation approach modeling longitudinal response profiles as smooth curves of time under a functional mixed effects model. We develop a Gibbs sampling algorithm to draw model parameters and imputations for missing values, using a blocking technique for an increased computational efficiency. In an illustrative example, we apply a multiple imputation analysis to data from the Panel Study of Income Dynamics and the Child Development Supplement to investigate the gradient effect of family income on children's health status. Our simulation study demonstrates that this approach performs well under varying modeling assumptions on the time trajectory functions and missingness patterns.


Assuntos
Interpretação Estatística de Dados , Estudos Longitudinais , Modelos Estatísticos , Algoritmos , Criança , Desenvolvimento Infantil , Pré-Escolar , Simulação por Computador , Humanos , Lactente , Projetos de Pesquisa , Fatores Socioeconômicos
15.
Comput Stat Data Anal ; 54(3): 790-801, 2010 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-20526424

RESUMO

Multivariate extensions of well-known linear mixed-effects models have been increasingly utilized in inference by multiple imputation in the analysis of multilevel incomplete data. The normality assumption for the underlying error terms and random effects plays a crucial role in simulating the posterior predictive distribution from which the multiple imputations are drawn. The plausibility of this normality assumption on the subject-specific random effects is assessed. Specifically, the performance of multiple imputation created under a multivariate linear mixed-effects model is investigated on a diverse set of incomplete data sets simulated under varying distributional characteristics. Under moderate amounts of missing data, the simulation study confirms that the underlying model leads to a well-calibrated procedure with negligible biases and actual coverage rates close to nominal rates in estimates of the regression coefficients. Estimation quality of the random-effect variance and association measures, however, are negatively affected from both the misspecification of the random-effect distribution and number of incompletely-observed variables. Some of the adverse impacts include lower coverage rates and increased biases.

16.
Acad Pediatr ; 9(1): 47-52, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19329091

RESUMO

OBJECTIVE: To assess parental experience of pediatric primary care at the level of physician practice and to determine what variation exists among practices. METHODS: This cross-sectional survey assessed 7 pediatric primary care practices in eastern Massachusetts. Parents of children aged < or =12 years who received care between July 1999 and June 2000 were surveyed. Parents assessed practice performance in 6 areas of quality: access to care, patient education and information, patient/physician relationship, coordination and continuity of care, office staff courtesy and helpfulness, and specialty care experience. RESULTS: Surveys were returned by 744 parents (response rate 50%). Practices performed best in the domains of patient education and access to care, and performed poorest in coordination/continuity and specialty care experience. Practice performance varied in the included domains, with significant interpractice variation in specialty care experience (range 61-83 on 100-point scale), coordination and continuity (range 64-84), and access to care (range 80-92). Items with significant variation included the physician/nurse being informed about specialist care, the physician/nurse knowing the parent/child as people, staff helpfulness, and the physician/nurse knowing what worried the parent about the child's health. CONCLUSIONS: Parent reports of specific experiences of care revealed priorities for improvement in several areas, including coordination and continuity, specialty care experience, and interpersonal aspects of care. Performance differed among practices, providing an opportunity for practices to learn from each other. Survey-based measures of quality can help identify variation in performance and priorities for improving quality of care.


Assuntos
Padrões de Prática Médica , Atenção Primária à Saúde/organização & administração , Qualidade da Assistência à Saúde , Adulto , Assistência Ambulatorial/organização & administração , Boston , Criança , Continuidade da Assistência ao Paciente , Estudos Transversais , Pesquisas sobre Atenção à Saúde , Humanos , Pais , Educação de Pacientes como Assunto , Atenção Primária à Saúde/normas
17.
Health Serv Res ; 43(3): 882-900, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18454773

RESUMO

OBJECTIVE: To determine the association between Medicaid managed care pediatric behavioral health programs and unmet need for mental health care among children with special health care needs (CSHCN). DATA SOURCE: The National Survey of CSHCN (2000-2002), using subsets of 4,400 CSHCN with Medicaid and 1,856 CSHCN with Medicaid and emotional problems. Additional state-level sources were used. STUDY DESIGN: Multilevel models investigated the association between managed care program type (carve-out, integrated) or fee-for-service (FFS) and reported unmet mental health care need. DATA COLLECTION/EXTRACTION METHODS: The National Survey of CSHCN conducted telephone interviews with a sample representative at both the national and state levels. PRINCIPAL FINDINGS: In multivariable models, among CSHCN with only Medicaid, living in states with Medicaid managed care (odds ratio [OR]=1.81; 95 percent confidence interval: 1.04-3.15) or carve-out programs (OR=1.93; 1.01-3.69) were associated with greater reported unmet mental health care need compared with FFS programs. Among CSHCN on Medicaid with emotional problems, the association between managed care and unmet need was stronger (OR=2.48; 1.38-4.45). CONCLUSIONS: State Medicaid pediatric behavioral health managed care programs were associated with greater reported unmet mental health care need than FFS programs among CSHCN insured by Medicaid, particularly for those with emotional problems.


Assuntos
Crianças com Deficiência/psicologia , Necessidades e Demandas de Serviços de Saúde , Programas de Assistência Gerenciada/organização & administração , Medicaid/organização & administração , Serviços de Saúde Mental , Adolescente , Área Programática de Saúde , Criança , Pré-Escolar , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Masculino , Estados Unidos
18.
Philos Trans A Math Phys Eng Sci ; 366(1874): 2389-403, 2008 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-18407897

RESUMO

Methods specifically targeting missing values in a wide spectrum of statistical analyses are now part of serious statistical thinking due to many advances in computational statistics and increased awareness among sophisticated consumers of statistics. Despite many advances in both theory and applied methods for missing data, missing-data methods in multilevel applications lack equal development. In this paper, I consider a popular inferential tool via multiple imputation in multilevel applications with missing values. I specifically consider missing values occurring arbitrarily at any level of observational units. I use Bayesian arguments for drawing multiple imputations from the underlying (posterior) predictive distribution of missing data. Multivariate extensions of well-known mixed-effects models form the basis for simulating the posterior predictive distribution, hence creating the multiple imputations. The discussion of these topics is demonstrated in an application assessing correlates to unmet need for mental health care among children with special health care needs.


Assuntos
Biometria/métodos , Interpretação Estatística de Dados , Algoritmos , Teorema de Bayes , Criança , Estudos Transversais , Coleta de Dados , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Humanos , Modelos Lineares , Estudos Longitudinais , Serviços de Saúde Mental/estatística & dados numéricos , Análise Multivariada , Estados Unidos
19.
Med Care ; 46(5): 507-15, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18438199

RESUMO

BACKGROUND: State-level disparities in access to physicians and preventive services between Hispanics and whites may have changed over time. OBJECTIVE: To assess state-based changes in Hispanics' access to physicians and preventive services from 1991 to 2004. METHODS: Using data from the Behavioral Risk Factor Surveillance System in the 10 states with the largest Hispanic populations, we examined 4 preventive services for eligible adults (mammography, Papanicolaou testing, colorectal cancer screening, and cholesterol testing) and 2 measures of access to physicians (obtaining routine checkup in prior 2 years and avoiding seeing physician when needed due to cost in prior year). In each state we assessed unadjusted and adjusted Hispanic-white access gaps and changes over time. RESULTS: Hispanic-white access gaps persisted over time and varied widely by state. Disparities narrowed and became nonsignificant in 2 states (Arizona and California) for mammography and 3 states (Nevada, New Mexico, and New York) for Pap testing. Other disparities increased and became significant (mammography in Texas; colorectal cancer screening in California, Colorado, and Texas; cholesterol testing in Florida and Nevada; routine checkups in Arizona and New Mexico). Disparities in lacking doctor visits due to cost remained large and significant over time in all states. Insurance status and education were the main contributors to Hispanic-white disparities and their impact increased over time. CONCLUSIONS: Although use of preventive services and access to physicians improved for both whites and Hispanics nationally, access gaps varied widely among states. Therefore, efforts to monitor and eliminate disparities should be conducted at both the national and state levels.


Assuntos
Testes Diagnósticos de Rotina/estatística & dados numéricos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Hispânico ou Latino/estatística & dados numéricos , Serviços Preventivos de Saúde/estatística & dados numéricos , População Branca/estatística & dados numéricos , Adulto , Idoso , Sistema de Vigilância de Fator de Risco Comportamental , Colonoscopia , Testes Diagnósticos de Rotina/tendências , Feminino , Disparidades em Assistência à Saúde/tendências , Humanos , Masculino , Mamografia , Pessoa de Meia-Idade , Teste de Papanicolaou , Aceitação pelo Paciente de Cuidados de Saúde/etnologia , Serviços Preventivos de Saúde/tendências , Estados Unidos , Esfregaço Vaginal
20.
Matern Child Health J ; 12(5): 650-61, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17899342

RESUMO

OBJECTIVES: We partnered with a Massachusetts family workgroup to analyze state level data that would be most useful to consumers and advocates in Massachusetts. METHODS: Massachusetts' and US data from the 2001 National Survey of Children with Special Health Care Needs (NSCSHCN) were analyzed. We examined types of need and prevalence of unmet need for all CSHCN and for more severely affected CSHCN. We also correlated unmet need to child and family characteristics using multivariate logistic regression. RESULTS: In Massachusetts, 17% of CSHCN and 37% of children more severely affected did not receive needed care. CSHCN who were uninsured anytime during the previous year were nearly 5 times more likely to experience an unmet need (OR = 4.95, CI: 1.69-14.51). Children with more functional limitations (OR = 3.15; CI: 1.59-6.24) and unstable health care needs (OR = 3.26; CI: 1.33-8.00) were also more likely to experience an unmet need. Receiving coordinated care in a medical home (OR = 0.46; CI: 0.23-0.90) was associated with reduced reports of unmet need. CONCLUSIONS: With input from families of CSHCN, researchers can direct their analyses to answering the questions and concerns most meaningful to families. We estimate that 1 in 6 CSHCN in Massachusetts did not receive needed care, with more than 1 in 3 CSHCN with a more severe condition experiencing an unmet need. Enabling factors were predictors of unmet need suggesting solutions such as expanding insurance coverage and improving services systems for CSHCN.


Assuntos
Crianças com Deficiência/estatística & dados numéricos , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Avaliação das Necessidades , Criança , Serviços de Saúde da Criança , Pesquisa Participativa Baseada na Comunidade , Assistência Integral à Saúde/estatística & dados numéricos , Defesa do Consumidor , Saúde da Família , Pesquisas sobre Atenção à Saúde , Serviços de Saúde/estatística & dados numéricos , Humanos , Massachusetts
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