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1.
BMC Palliat Care ; 21(1): 98, 2022 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-35655168

RESUMEN

BACKGROUND: This protocol is based on home health care (HHC) best practice evidence showing the value of coupling timely post-acute care visits by registered nurses and early outpatient provider follow-up for sepsis survivors. We found that 30-day rehospitalization rates were 7 percentage points lower (a 41% relative reduction) when sepsis survivors received a HHC nursing visit within 2 days of hospital discharge, at least 1 more nursing visit the first week, and an outpatient provider follow-up visit within 7 days compared to those without timely follow-up. However, nationwide, only 28% of sepsis survivors who transitioned to HHC received this timely visit protocol. The opportunity exists for many more sepsis survivors to benefit from timely home care and outpatient services. This protocol aims to achieve this goal.  METHODS: Guided by the Consolidated Framework for Implementation Research, this Type 1 hybrid pragmatic study will test the effectiveness of the Improving Transitions and Outcomes of Sepsis Survivors (I-TRANSFER) intervention compared to usual care on 30-day rehospitalization and emergency department use among sepsis survivors receiving HHC. The study design includes a baseline period with no intervention, a six-month start-up period followed by a one-year intervention period in partnership with five dyads of acute and HHC sites. In addition to the usual care/control periods from the dyad sites, additional survivors from national data will serve as control observations for comparison, weighted to produce covariate balance. The hypotheses will be tested using generalized mixed models with covariates guided by the Andersen Behavioral Model of Health Services. We will produce insights and generalizable knowledge regarding the context, processes, strategies, and determinants of I-TRANSFER implementation. DISCUSSION: As the largest HHC study of its kind and the first to transform this novel evidence through implementation science, this study has the potential to produce new knowledge about the impact of timely attention in HHC to alleviate symptoms and support sepsis survivor's recovery at home. If effective, the impact of this intervention could be widespread, improving the quality of life and health outcomes for a growing, vulnerable population of sepsis survivors. A national advisory group will assist with widespread results dissemination.


Asunto(s)
Servicios de Atención de Salud a Domicilio , Sepsis , Atención Ambulatoria , Humanos , Calidad de Vida , Sepsis/terapia , Sobrevivientes
2.
Int J Radiat Oncol Biol Phys ; 112(1): 40-51, 2022 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-33974886

RESUMEN

PURPOSE: The omission of radiation therapy (RT) in older women with stage 1 estrogen-receptor-positive (ER+) breast cancer receiving endocrine therapy (ET) is an acceptable strategy based on randomized trial data. Less is known about the omission of ET with or without RT. METHODS AND MATERIALS: We analyzed surveillance, epidemiology, and end results (SEER)-Medicare data for 13,321 women age 66 years or older with stage I ER+ breast cancer from 2007 to 2012 who underwent breast-conserving surgery. Patients were classified into 4 groups: (1) ET + RT (reference); (2) ET alone; (3) RT alone; and (4) neither RT nor ET (NT). Second breast cancer events (SBCEs) were captured using the Chubak high-specificity algorithm. We used χ2 tests for descriptive statistics, multivariable multinomial logistic regression to estimate relative risk of undergoing a treatment, and multivariable, propensity-weighted competing-risks survival regression to estimate standardized hazard ratio (SHR) of SBCE. We set significance at P ≤ .01. RESULTS: Most women underwent both treatments, with 44% undergoing ET + RT, 41% RT alone, 6.6% ET alone, and 8.6% NT, but practice patterns varied over time. From 2007 to 2012, RT decreased from 49% to 30%, whereas ET alone and ET + RT increased (ET alone, 5.4%-9.6%; ET + RT, 38%-51%). Compared with patients age 66 to 69 years, patients age 80 to 85 years were more likely to receive NT (odds ratio [OR], 8.9), RT (OR, 1.9), or ET (OR, 8.8) versus ET + RT (P < .01). Three percent of subjects had an SBCE (2.2% ET + RT, 3.0% RT alone, 3.2% ET alone, 7.0% NT). Relative to ET + RT, NT and ET alone were associated with higher SBCE (NT: SHR, 3.7, P < .001; ET alone: SHR, 2.2, P = .008), whereas RT was not associated with a higher SBCE (SHR 1.21; P = .137). Clinical factors associated with higher SBCE were HER2 positivity and pT1c (SHR, 1.7; P = .006). CONCLUSIONS: Treatment with RT alone in older women with stage I ER+ disease is decreasing. RT alone is not associated with an increased risk for SBCE. By contrast, NT and ET are both associated with higher SBCE in multivariable analysis with propensity weighting. Further study of the omission of endocrine therapy in this patient population is warranted.


Asunto(s)
Neoplasias de la Mama , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/patología , Estrógenos/uso terapéutico , Femenino , Humanos , Mastectomía Segmentaria , Medicare , Estadificación de Neoplasias , Radioterapia Adyuvante/métodos , Resultado del Tratamiento , Estados Unidos/epidemiología
3.
Econ Hum Biol ; 42: 101013, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33989870

RESUMEN

In this paper, we examine the effects of the State Innovation Models Initiative (SIM) on population-level health status. SIM provided $250 million to six states in 2013 for broad delivery system reforms. We use data from the Behavioral Risk Factor Surveillance System for the years 2010-2016. Our sample is restricted to individuals ages 45 and older residing in 6 SIM and 15 control states. Treatment effects in a difference-in-difference design are estimated using a latent factor model for multiple indicators of health status. In addition to estimates for the primary sample, we obtain estimates for six subsamples based on strata of age, education, income, race and urban/rural status. We find that individuals in states that implemented SIM show significant improvements in health status. The effects of SIM are greater among older, Medicare eligible individuals, including those living in rural areas. The State Innovation Models Initiative, which provided financial incentives for states to implement health care delivery system reforms, led to population-level improvements in health status.


Asunto(s)
Medicare , Salud Poblacional , Anciano , Sistema de Vigilancia de Factor de Riesgo Conductual , Reforma de la Atención de Salud , Humanos , Persona de Mediana Edad , Estados Unidos/epidemiología
4.
Econ Lett ; 201: 109800, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33658739

RESUMEN

News outlets pointed to meatpacking plants and nursing homes as viral hotspots during the first wave of the COVID-19 pandemic in the US. In contrast to news reports, we find that retirement communities and assisted living facilities were associated with fewer cases and deaths and that skilled nursing facilities were associated with fewer cases. We find that meatpacking plants were associated with more cases and deaths as were bakeries. In contrast dairy plants were associated with fewer cases and deaths. Proactive implementation of policy measures in nursing homes and retirement facilities were beneficial. Analogous guidance was lacking for food manufacturing establishments, potentially exacerbating the spread of the virus.

5.
JAMA Netw Open ; 3(2): e200038, 2020 02 05.
Artículo en Inglés | MEDLINE | ID: mdl-32101307

RESUMEN

Importance: Despite a growing recognition of the increased mortality risk among sepsis survivors, little is known about the patterns of end-of-life care among this population. Objective: To describe patterns of end-of-life care among a national sample of sepsis survivors and identify factors associated with long-term mortality risk and hospice use. Design, Setting, and Participants: This cohort study assessed sepsis survivors who were Medicare fee-for-service beneficiaries discharged to home health care using national Medicare administrative, claims, and home health assessment data from 2013 to 2014. The initial and final primary analyses were conducted in July 2017 and from July to August 2019, respectively. Exposures: Sepsis hospital discharge and 1 or more home health assessments within 1 week. Main Outcomes and Measures: Outcomes were 1-year mortality among all sepsis survivors and hospitalization in the last 30 days of life, death in an acute care hospital, and hospice use among decedents. Multivariate logistic regression was used to identify factors associated with 1-year mortality and hospice use. Results: Among 87 581 sepsis survivors who were Medicare fee-for-service beneficiaries discharged to home health care, 49 323 (56.3%) were aged 75 years or older, 69 499 (79.4%) were non-Hispanic white, and 48 472 (55.3%) were female. Among the total survivors, 24 423 (27.9%) people died within 1 year of discharge, with a median (interquartile range) survival time of 119 (51-220) days. Among these decedents, 16 684 (68.2%) were hospitalized in the last 30 days of life, 6560 (26.8%) died in an acute care hospital, and 12 573 (51.4%) were enrolled in hospice, with 5729 (45.6%) using hospice for 7 or fewer days. Several factors were associated with 1-year mortality, including a cancer diagnosis (odds ratio [OR], 3.66; 95% CI, 3.50-3.83; P < .001), multiple dependencies of activities of daily living or instrumental activities of daily living (OR, 2.80; 95% CI, 2.57-3.05; P < .001), and an overall poor health status (OR, 2.21; 95% CI, 2.01-2.44; P < .001) documented on home health assessment. Among the decedents, cancer was associated with hospice use (OR, 2.25; 95% CI, 2.11-2.41; P < .001), patients aged 85 years or older (OR, 1.49; 95% CI, 1.37-1.61; P < .001), and living in an assisted living setting (OR, 1.93; 95% CI, 1.69-2.19; P < .001). Conclusions and Relevance: The findings of this study suggest that death within 1 year after sepsis discharge may be common among Medicare beneficiaries discharged to home health care. Although 1 in 2 decedents used hospice, aggressive care near the end of life and late hospice referral were common. Readily identifiable risk factors suggest opportunities to target efforts to improve palliative and end-of-life care among high-risk sepsis survivors.


Asunto(s)
Sepsis/epidemiología , Sobrevivientes/estadística & datos numéricos , Cuidado Terminal/estadística & datos numéricos , Anciano , Anciano de 80 o más Años , Comorbilidad , Femenino , Servicios de Atención de Salud a Domicilio/estadística & datos numéricos , Humanos , Masculino , Medicare/estadística & datos numéricos , Mortalidad , Estudios Retrospectivos , Estados Unidos/epidemiología
6.
BMC Health Serv Res ; 20(1): 115, 2020 Feb 13.
Artículo en Inglés | MEDLINE | ID: mdl-32054492

RESUMEN

BACKGROUND: Economic analyses of end-of-life care often focus on single aspects of care in selected cohorts leading to limited knowledge on the total level of care required to patients at their end-of-life. We aim at describing the living situation and full range of health care provided to patients at their end-of-life, including how informal care affects formal health care provision, using the case of colorectal cancer. METHODS: All colorectal cancer decedents between 2009 and 2013 in Norway (n = 7695) were linked to six national registers. The registers included information on decedents' living situation (days at home, in short- or long-term institution or in the hospital), their total health care utilization and costs in the secondary, primary and home- and community-based care setting. The effect of informal care was assessed through marital status (never married, currently married, or previously married) using regression analyses (negative binominal, two-part models and generalized linear models), controlling for age, gender, comorbidities, education, income, time since diagnosis and year of death. RESULTS: The average patient spent four months at home, while he or she spent 27 days in long-term institutions, 16 days in short-term institutions, and 21 days in the hospital. Of the total costs (~NOK 400,000), 58, 3 and 39% were from secondary carers (hospitals), primary carers (general practitioners and emergency rooms) and home- and community-based carers (home care and nursing homes), respectively. Compared to the never married, married patients spent 30 more days at home and utilized less home- and community-based care, but more health care services at the secondary and primary health care level. Their total healthcare costs were significantly lower (-NOK 65,621) than the never married. We found similar, but weaker, patterns for those who had been married previously. CONCLUSION: End-of-life care is primarily provided in the secondary and home-and community-based care level, and informal caregivers have a substantial influence on formal end-of-life care provision. Excluding aspects of care such as home and community-based care or informal care in economic analyses of end-of-life care provides a biased picture of the total resources required, and might lead to inefficient resource allocations.


Asunto(s)
Neoplasias Colorrectales/terapia , Costos de la Atención en Salud/estadística & datos numéricos , Estado Civil/estadística & datos numéricos , Aceptación de la Atención de Salud/estadística & datos numéricos , Cuidado Terminal/economía , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Noruega , Sistema de Registros
7.
Med Care ; 57(8): 633-640, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31295191

RESUMEN

BACKGROUND: There is little evidence to guide the care of over a million sepsis survivors following hospital discharge despite high rates of hospital readmission. OBJECTIVE: We examined whether early home health nursing (first visit within 2 days of hospital discharge and at least 1 additional visit in the first posthospital week) and early physician follow-up (an outpatient visit in the first posthospital week) reduce 30-day readmissions among Medicare sepsis survivors. DESIGN: A pragmatic, comparative effectiveness analysis of Medicare data from 2013 to 2014 using nonlinear instrumental variable analysis. SUBJECTS: Medicare beneficiaries in the 50 states and District of Columbia discharged alive after a sepsis hospitalization and received home health care. MEASURES: The outcomes, protocol parameters, and control variables were from Medicare administrative and claim files and the home health Outcome and Assessment Information Set (OASIS). The primary outcome was 30-day all-cause hospital readmission. RESULTS: Our sample consisted of 170,571 mostly non-Hispanic white (82.3%), female (57.5%), older adults (mean age, 76 y) with severe sepsis (86.9%) and a multitude of comorbid conditions and functional limitations. Among them, 44.7% received only the nursing protocol, 11.0% only the medical doctor protocol, 28.1% both protocols, and 16.2% neither. Although neither protocol by itself had a statistically significant effect on readmission, both together reduced the probability of 30-day all-cause readmission by 7 percentage points (P=0.006; 95% confidence interval=2, 12). CONCLUSIONS: Our findings suggest that, together, early postdischarge care by home health and medical providers can reduce hospital readmissions for sepsis survivors.


Asunto(s)
Cuidados Posteriores/métodos , Cuidados de Enfermería en el Hogar/métodos , Sepsis/terapia , Anciano , Protocolos Clínicos , Femenino , Humanos , Masculino , Alta del Paciente , Resultado del Tratamiento
8.
J Health Econ ; 63: 19-33, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30439575

RESUMEN

This article examines the long term physical and mental health effects of internal migration focusing on a relatively unique migration experience concentrated over a short period between 1950 and 1970 from the South to the North of Italy. We find a positive and statistically significant association between migration, its timing and physical health for migrant females, which we show are likely to represent rural females in both the early and the late cohort. We find less defined evidence of migration-health association for mental health. We link our findings to the economic transition and labor market transformation that Italy witnessed in that era. Male migrants were likely to be positively selected to migration, but harsh working conditions were likely to downplay this differential. On the contrary, women migrants, by and large, would not engage in the formal labor market avoiding the ill effects of working environments, at the same time benefiting from better living conditions and health care in the destination regions.


Asunto(s)
Estado de Salud , Migrantes/estadística & datos numéricos , Adulto , Anciano , Atención a la Salud/estadística & datos numéricos , Empleo/estadística & datos numéricos , Femenino , Humanos , Italia/epidemiología , Masculino , Salud Mental/estadística & datos numéricos , Persona de Mediana Edad , Factores Sexuales , Factores Socioeconómicos , Adulto Joven
9.
J Coll Physicians Surg Pak ; 28(2): 164-165, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29394981

RESUMEN

skin and subcutaneous tissue. Penis may be secondarily affected in some cases; however, primary isolated involvement of penis is rare. A 48-year male smoker presented with pain and blackish discoloration of the distal part of penis for the last 4 days which developed following rupture of a papulo-vesicular lesion over the prepuce of penis. It rapidly progressed to involve half of the skin of the penis. The patient was hospitalized and broad spectrum antibiotics were administered parenterally. Emergency wound debridement and urinary diversion by suprapubic cystostomy was done. After repeated wound debridement and dressings, the wound healed. Our case was unusual as the penis was the sole site of affection, which is very unusual and only few such cases are reported in the literature.


Asunto(s)
Escherichia coli/aislamiento & purificación , Gangrena de Fournier/diagnóstico , Klebsiella pneumoniae/aislamiento & purificación , Enfermedades del Pene/diagnóstico , Antibacterianos/uso terapéutico , Desbridamiento , Escherichia coli/efectos de los fármacos , Infecciones por Escherichia coli/tratamiento farmacológico , Gangrena de Fournier/tratamiento farmacológico , Gangrena de Fournier/microbiología , Gangrena de Fournier/cirugía , Humanos , Infecciones por Klebsiella/tratamiento farmacológico , Klebsiella pneumoniae/efectos de los fármacos , Masculino , Persona de Mediana Edad , Enfermedades del Pene/tratamiento farmacológico , Enfermedades del Pene/microbiología , Enfermedades del Pene/cirugía , Pene/patología , Resultado del Tratamiento , Derivación Urinaria , Cicatrización de Heridas
10.
Annu Rev Public Health ; 39: 489-505, 2018 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-29328879

RESUMEN

Health care expenditures and use are challenging to model because these dependent variables typically have distributions that are skewed with a large mass at zero. In this article, we describe estimation and interpretation of the effects of a natural experiment using two classes of nonlinear statistical models: one for health care expenditures and the other for counts of health care use. We extend prior analyses to test the effect of the ACA's young adult expansion on three different outcomes: total health care expenditures, office-based visits, and emergency department visits. Modeling the outcomes with a two-part or hurdle model, instead of a single-equation model, reveals that the ACA policy increased the number of office-based visits but decreased emergency department visits and overall spending.


Asunto(s)
Gastos en Salud/estadística & datos numéricos , Modelos Económicos , Aceptación de la Atención de Salud/estadística & datos numéricos , Patient Protection and Affordable Care Act/legislación & jurisprudencia , Servicio de Urgencia en Hospital/economía , Servicio de Urgencia en Hospital/estadística & datos numéricos , Humanos , Modelos Estadísticos , Visita a Consultorio Médico/economía , Visita a Consultorio Médico/estadística & datos numéricos , Estados Unidos
11.
Am J Clin Oncol ; 41(5): 458-464, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-27391357

RESUMEN

OBJECTIVE: The best course of treatment for recurrent ovarian cancer is uncertain. We sought to determine whether secondary cytoreductive surgery for first recurrence of ovarian cancer improves overall survival compared with other treatments. MATERIALS AND METHODS: We assessed survival using Surveillance, Epidemiology and End Results-Medicare data for advanced stage ovarian cancer cases diagnosed from January 1, 1997 to December 31, 2007 with survival data through 2010 using multinomial propensity weighted finite mixture survival regression models to distinguish true from misclassified recurrences. Of 35,995 women ages 66 years and older with ovarian cancer, 3439 underwent optimal primary debulking surgery with 6 cycles of chemotherapy; 2038 experienced a remission. RESULTS: One thousand six hundred thirty-five of 2038 (80%) women received treatment for recurrence of whom 72% were treated with chemotherapy only, 16% with surgery and chemotherapy and 12% received hospice care. Median survival of women treated with chemotherapy alone, surgery and chemotherapy, or hospice care was 4.1, 5.4, and 2.2 years, respectively (P<0.001). Of those receiving no secondary treatments, 75% were likely true nonrecurrences with median survival of 15.9 years and 25% misclassified with 2.4 years survival. Survival among women with recurrence was greater for those treated with surgery and chemotherapy compared with chemotherapy alone (hazard ratio=1.67; 95% confidence interval, 1.13-2.47). Women who were older with more comorbidities and high-grade cancer had worse survival. CONCLUSIONS: Secondary surgery with chemotherapy to treat recurrent ovarian cancer increases survival by 1.3 years compared with chemotherapy alone and pending ongoing randomized trial results, may be considered a standard of care.


Asunto(s)
Quimioterapia Adyuvante/mortalidad , Procedimientos Quirúrgicos de Citorreducción/mortalidad , Terapia Neoadyuvante/mortalidad , Recurrencia Local de Neoplasia/mortalidad , Neoplasias Ováricas/mortalidad , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/terapia , Neoplasias Ováricas/patología , Neoplasias Ováricas/terapia , Pronóstico , Programa de VERF , Tasa de Supervivencia
13.
Investig Clin Urol ; 58(2): 103-108, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-28261679

RESUMEN

PURPOSE: Extracorporeal shock wave lithotripsy (ESWL) is an established modality for renal calculi. Its role for large stones is being questioned. A novel model of temporary double J (DJ) stenting followed by ESWL was devised and outcomes were assessed. MATERIALS AND METHODS: The study included 95 patients with renal calculi sized 1 to 2 cm. Patients were randomized into 3 groups. Group 1 received ESWL only, whereas group 2 underwent stenting followed by ESWL. In group 3, a distinct model was applied in which the stent was kept for 1 week and then removed, followed by ESWL. Procedural details, analgesic requirements, and outcome were analyzed. RESULTS: Eighty-eight patients (male, 47; female, 41) were available for analysis. The patients' mean age was 37.9±10.9 years. Stone profile was similar among groups. Group 3 received fewer shocks (mean, 3,155) than did group 1 (mean, 3,859; p=0.05) or group 2 (mean, 3,872; p=0.04). The fragmentation rate was similar in group 3 (96.7%) and groups 1 (81.5%, p=0.12) and 2 (87.1%, p=0.16). Overall clearance in group 3 was significantly improved (83.3%) compared with that in groups 1 (63.0%, p=0.02) and 2 (64.5%, p=0.02) and was maintained even in lower pole stones. The percentage successful outcome in groups 1, 2, and 3 was 66.7%, 64.5%, and 83.3%, respectively (p=0.21). The analgesic requirement in group 2 was higher than in the other groups (p=0.00). Group 2 patients also had more grade IIIa (2/3) and IIIB (1/2) complications. CONCLUSIONS: Stenting adversely affects stone clearance and also makes the later course uncomfortable. Our model of brief stenting followed by ESWL provided better clearance, comfort, and a modest improvement in outcome with fewer sittings and steinstrasse in selected patients with large renal calculi.


Asunto(s)
Cálculos Renales/terapia , Litotricia/métodos , Stents , Adulto , Analgésicos/administración & dosificación , Esquema de Medicación , Femenino , Humanos , Cálculos Renales/complicaciones , Cálculos Renales/patología , Litotricia/efectos adversos , Masculino , Persona de Mediana Edad , Obesidad/complicaciones , Dimensión del Dolor/métodos , Estudios Prospectivos , Stents/efectos adversos , Resultado del Tratamiento
14.
MDM Policy Pract ; 2(1): 2381468317707206, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-30288419

RESUMEN

There are considerable quality differences across private Medicare Advantage insurance plans, so it is important that beneficiaries make informed choices. During open enrollment for the 2013 coverage year, the Centers for Medicare & Medicaid Services sent letters to beneficiaries enrolled in low-quality Medicare Advantage plans (i.e., plans rated less than 3 stars for at least 3 consecutive years by Medicare) explaining the stars and encouraging them to reexamine their choices. To understand the effectiveness of these low-cost, behavioral "nudge" letters, we used a beneficiary-level national retrospective cohort and performed multivariate regression analysis of plan selection during the 2013 open enrollment period among those enrolled in plans rated less than 3 stars. Our analysis controls for beneficiary demographic characteristics, health and health care spending risks, the availability of alternative higher rated plan options in their local market, and historical disenrollment rates from the plans. We compared the behaviors of those beneficiaries who received the nudge letters with those who enrolled in similar poorly rated plans but did not receive such letters. We found that beneficiaries who received the nudge letter were almost twice as likely (28.0% [95% confidence interval = 27.7%, 28.2%] vs. 15.3% [95% confidence interval = 15.1%, 15.5%]) to switch to a higher rated plan compared with those who did not receive the letter. White beneficiaries, healthier beneficiaries, and those residing in areas with more high-performing plan choices were more likely to switch plans in response to the nudge. Our findings highlight both the importance and efficacy of providing timely and actionable information to beneficiaries about quality in the insurance marketplace to facilitate informed and value-based coverage decisions.

15.
J Tissue Eng Regen Med ; 11(1): 231-245, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-24799390

RESUMEN

Spatiotemporal changes in the extracellular matrix (ECM) were studied within abdominal aortic aneurysms (AAAs) generated in rats via elastase infusion. At 7, 14 and 21 days post-induction, AAA tissues were divided into proximal, mid- and distal regions, based on their location relative to the renal arteries and the region of maximal aortic diameter. Wall thicknesses differed significantly between the AAA spatial regions, initially increasing due to positive matrix remodelling and then decreasing due to wall thinning and compaction of matrix as the disease progressed. Histological images analysed using custom segmentation tools indicated significant differences in ECM composition and structure vs healthy tissue, and in the extent and nature of matrix remodelling between the AAA spatial regions. Histology and immunofluorescence (IF) labelling provided evidence of neointimal AAA remodelling, characterized by presence of elastin-containing fibres. This remodelling was effected by smooth muscle α-actin-positive neointimal cells, which transmission electron microscopy (TEM) showed to differ morphologically from medial SMCs. TEM of the neointima further showed the presence of elongated deposits of amorphous elastin and the presence of nascent, but not mature, elastic fibres. These structures appeared to be deficient in at least one microfibrillar component, fibrillin-1, which is critical to mature elastic fibre assembly. The substantial production of elastin and elastic fibre-like structures that we observed in the AAA neointima, which was not observed elsewhere within AAA tissues, provides a unique opportunity to capitalize on this autoregenerative phenomenon and direct it from the standpoint of matrix organization towards restoring healthy aortic matrix structure, mechanics and function. Copyright © 2014 John Wiley & Sons, Ltd.


Asunto(s)
Aorta Abdominal/patología , Aneurisma de la Aorta Abdominal/patología , Matriz Extracelular/metabolismo , Músculo Liso Vascular/patología , Actinas/metabolismo , Animales , Aorta/patología , Modelos Animales de Enfermedad , Tejido Elástico/patología , Elastina/metabolismo , Técnica del Anticuerpo Fluorescente , Miocitos del Músculo Liso , Elastasa Pancreática/metabolismo , Fenotipo , Ratas , Ratas Sprague-Dawley , Regeneración , Análisis Espacio-Temporal
16.
Health Serv Res ; 52(4): 1445-1472, 2017 08.
Artículo en Inglés | MEDLINE | ID: mdl-27468707

RESUMEN

OBJECTIVE: To compare the effectiveness of two "treatments"-early, intensive home health nursing and physician follow-up within a week-versus less intense and later postacute care in reducing readmissions among heart failure (HF) patients discharged to home health care. DATA SOURCES: National Medicare administrative, claims, and patient assessment data. STUDY DESIGN: Patients with a full week of potential exposure to the treatments were followed for 30 days to determine exposure status, 30-day all-cause hospital readmission, other health care use, and mortality. An extension of instrumental variables methods for nonlinear statistical models corrects for nonrandom selection of patients into treatment categories. Our instruments are the index hospital's rate of early aftercare for non-HF patients and hospital discharge day of the week. DATA EXTRACTION METHODS: All hospitalizations for a HF principal diagnosis with discharge to home health care between July 2009 and June 2010 were identified from source files. PRINCIPAL FINDINGS: Neither treatment by itself has a statistically significant effect on hospital readmission. In combination, however, they reduce the probability of readmission by roughly 8 percentage points (p < .001; confidence interval = -12.3, -4.1). Results are robust to changes in implementation of the nonlinear IV estimator, sample, outcome measure, and length of follow-up. CONCLUSIONS: Our results call for closer coordination between home health and medical providers in the clinical management of HF patients immediately after hospital discharge.


Asunto(s)
Insuficiencia Cardíaca/terapia , Servicios de Atención de Salud a Domicilio , Servicios de Enfermería , Alta del Paciente , Readmisión del Paciente/tendencias , Pautas de la Práctica en Medicina , Cuidado de Transición , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Calidad de la Atención de Salud
17.
J Gen Intern Med ; 31(2): 234-241, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26282952

RESUMEN

BACKGROUND: To facilitate informed decision-making in the Medicare Advantage marketplace, the Centers for Medicare & Medicaid Services publishes plan information on the Medicare Plan Finder website, including costs, benefits, and star ratings reflecting quality. Little is known about how beneficiaries weigh costs versus quality in enrollment decisions. OBJECTIVE: We aimed to assess associations between publicly reported Medicare Advantage plan attributes (i.e., costs, quality, and benefits) and brand market share and beneficiaries' enrollment decisions. DESIGN, SETTING, PARTICIPANTS: We performed a nationwide, beneficiary-level cross-sectional analysis of 847,069 beneficiaries enrolling in Medicare Advantage for the first time in 2011. MAIN MEASURES: Matching beneficiaries with their plan choice sets, we used conditional logistic regression to estimate associations between plan attributes and enrollment to assess the proportion of enrollment variation explained by plan attributes and willingness to pay for quality. KEY RESULTS: Relative to the total variation explained by the model, the variation in plan choice explained by premiums (25.7 %) and out-of-pocket costs (11.6 %) together explained nearly three times as much as quality ratings (13.6 %), but brand market share explained the most variation (35.3 %). Further, while beneficiaries were willing to pay more in total annual combined premiums and out-of-pocket costs for higher-rated plans (from $4,154.93 for 2.5-star plans to $5,698.66 for 5-star plans), increases in willingness to pay diminished at higher ratings, from $549.27 (95 %CI: $541.10, $557.44) for a rating increase from 2.5 to 3 stars to $68.22 (95 %CI: $61.44, $75.01) for an increase from 4.5 to 5 stars. Willingness to pay varied among subgroups: beneficiaries aged 64-65 years were more willing to pay for higher-rated plans, while black and rural beneficiaries were less willing to pay for higher-rated plans. CONCLUSIONS: While beneficiaries prefer higher-quality and lower-cost Medicare Advantage plans, marginal utility for quality diminishes at higher star ratings, and their decisions are strongly associated with plans' brand market share.


Asunto(s)
Comportamiento del Consumidor/economía , Toma de Decisiones , Medicare Part C/economía , Indicadores de Calidad de la Atención de Salud , Anciano , Comportamiento del Consumidor/estadística & datos numéricos , Estudios Transversales , Femenino , Gastos en Salud/estadística & datos numéricos , Humanos , Masculino , Medicare Part C/normas , Persona de Mediana Edad , Sensibilidad y Especificidad , Estados Unidos
18.
Am J Emerg Med ; 34(1): 16-9, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26490388

RESUMEN

INTRODUCTION: We examined trends in the use of observation services and the relationship between index service type (observation services, emergency department [ED] visits, inpatient stays) and both clinical outcomes and Medicare payments. METHODS: We created a yearly cohort panel of Medicare beneficiaries with chest pain. We evaluate the relationships between index service type and 30-day clinical outcomes using a multinomial logit model and between index service type and Medicare payments using generalized linear models. RESULTS: In 2009, 24% of patients with chest pain received observation services; this rose to 29% in 2011. Conversely, 20% were treated as hospital inpatients in 2009; this fell to 16% in 2011. In the adjusted analysis, the risk of 30-day return to the hospital was 7% less (95% confidence interval, 5%-8%) for those receiving observation services as compared with inpatients. Average Medicare payments ranged from $3032 for beneficiaries initially treated in the ED to $3885 for those initially treated in observation to $6545 for those initially treated as inpatients. DISCUSSION: Patients treated in observation are less likely than those treated in the ED or as inpatients to have an adverse event within 30 days. Adjusted Medicare payments, including the index stay and the subsequent 30 days, were substantially less for those treated in observation as compared with those treated as inpatients, but more than for those treated and released from the ED. Higher rates of observation service use do not appear to be negatively affecting patient outcomes and may lower costs relative to inpatient treatment.


Asunto(s)
Dolor en el Pecho/economía , Servicio de Urgencia en Hospital/economía , Hospitalización/economía , Medicare/economía , Espera Vigilante/economía , Espera Vigilante/estadística & datos numéricos , Anciano , Anciano de 80 o más Años , Femenino , Costos de Hospital , Humanos , Masculino , Estudios Retrospectivos , Estados Unidos
19.
Econ Hum Biol ; 19: 170-83, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26414481

RESUMEN

This paper examines the relationship between increased Supplemental Nutritional Assistance Program (SNAP) benefits following the 2009 American Recovery and Reinvestment Act (ARRA) and the diet quality of individuals from SNAP-eligible compared to ineligible (those with somewhat higher income) households using data from the 2007-2010 National Health and Nutrition Examination Survey. The ARRA increased SNAP monthly benefits by 13.6% of the maximum allotment for a given household size, equivalent to an increase of $24 to $144 for one-to-eight person households respectively. In the full sample, we find that these increases in SNAP benefits are not associated with changes in nutrient intake and diet quality. However, among those with no more than a high school education, higher SNAP benefits are associated with a 46% increase in the mean caloric share from sugar-sweetened beverages (SSBs) and a decrease in overall diet quality especially for those at the lower end of the diet quality distribution, amounting to a 9% decline at the 25th percentile.


Asunto(s)
American Recovery and Reinvestment Act/estadística & datos numéricos , Dieta/economía , Asistencia Alimentaria/estadística & datos numéricos , Pobreza/estadística & datos numéricos , Adulto , Anciano , Bebidas/estadística & datos numéricos , Ingestión de Energía , Conducta Alimentaria , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas Nutricionales , Estado Nutricional , Factores Socioeconómicos , Edulcorantes , Estados Unidos , Adulto Joven
20.
Acad Emerg Med ; 22(8): 955-64, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26205260

RESUMEN

OBJECTIVES: The objective was to assess the relationship between emergency department (ED) admission rates for Medicare beneficiaries with chest pain and outcomes, specifically 30-day rates of acute myocardial infarction (AMI) and mortality. METHODS: Using a 20% random sample of Medicare beneficiaries in 2009, 158,295 beneficiaries with a primary diagnosis of chest pain at the conclusion of their ED visits were selected to assess outcomes based on the decision to hospitalize or discharge home. The proportions of these patients admitted to inpatient or observation status at 2,219 U.S. hospitals were calculated, adjusting for differences in patient and hospital characteristics. Both bivariate analysis and multivariable logistic regression were used to estimate the effect of the adjusted admission rates (designed to be a measure of care intensity) on patient outcomes. Other covariates in the multivariable model included patient demographics, medical conditions, and hospital utilization in the 30 days prior to the ED visits. Results from the bivariate and multivariable analyses were compared for consistency. RESULTS: The adjusted Medicare admission rate for ED patients with chest pain averaged 63% for the middle quintile of the patient sample and ranged from 38% to 81% in the lowest and highest quintiles. The multivariable model yielded estimates of 3.6 fewer cases of AMI (95% confidence interval [CI] = 1.5 to 5.1 cases) and 2.8 fewer deaths (95% CI = 0.6 to 4.1 deaths) per 1,000 chest pain patients associated with an admission rate of 81% versus 38%. The estimates from the bivariate analysis were of similar magnitude. CONCLUSIONS: Considerable variation exists across U.S. hospitals in ED admission rates for Medicare patients with chest pain. Hospitals that approach admissions more conservatively (i.e., higher admission rates) in this population have lower rates of AMI and mortality.


Asunto(s)
Dolor en el Pecho/terapia , Servicio de Urgencia en Hospital/estadística & datos numéricos , Medicare/estadística & datos numéricos , Infarto del Miocardio/mortalidad , Admisión del Paciente/estadística & datos numéricos , Enfermedad Aguda , Anciano , Dolor en el Pecho/etiología , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Modelos Logísticos , Masculino , Infarto del Miocardio/diagnóstico , Estados Unidos
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