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1.
Tijdschr Psychiatr ; 66(1): 24-29, 2024.
Artículo en Holandés | MEDLINE | ID: mdl-38380484

RESUMEN

BACKGROUND: In 2020, Zorgverzekeraars Nederland (ZN), the umbrella organization of nine health insurers in The Netherlands. presented a vision of the future of mental health care in the Netherlands in ‘De GGZ in 2025. Vergezicht op de geestelijke gezondheidszorg’ (‘Outlook on mental health care’). This document can be seen as marking the fact that key stakeholders share a common vision on the future of the GGZ in the Netherlands. Contracting care is often difficult. The tension between providing quality and sufficient care and available funding leads to friction. Congruence in vision, goals and practices are important conditions for adequate relationship building. Does the vision document contribute to this? AIM: To discuss the experiences of mental health care administrators and health insurers in contracting and collaboration. METHOD: Conducting interviews with both directors of mental health institutions and the strategic (policy) advisors of health insurers. In the approach we used the salience model. RESULTS: The relationship between mental health care administrators and health insurers is perceived to be distrustful and complex, and has deteriorated slightly in 2021 compared to 2019. Perceived power, legitimacy and urgency affect the relationship. Almost all health insurers are characterized as dominant stakeholders based on the salience model. Both parties are open to improving the relationship, which requires more transparency and mutual understanding. CONCLUSION: With the supported content of the vision document, there is to some extent shared governance. The change steps (shared innovation) considered desirable will be promoted by partly granting the intended benefits to each other (shared savings).


Asunto(s)
Aseguradoras , Salud Mental , Humanos , Países Bajos
2.
Knee Surg Sports Traumatol Arthrosc ; 30(12): 4134-4143, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35391552

RESUMEN

PURPOSE: To evaluate the effectiveness of a tailored intervention to reduce low value MRIs and arthroscopies among patients ≥ 50 years with degenerative knee disease in 13 Dutch orthopaedic centers (intervention group) compared with all other Dutch orthopaedic centers (control group). METHODS: All patients with degenerative knee disease ≥ 50 years admitted to Dutch orthopaedic centers from January 2016 to December 2018 were included. The tailored intervention included participation of clinical champions, education on the Dutch Choosing Wisely recommendation for MRI's and arthroscopies in degenerative knee disease, training of orthopaedic surgeons to manage patient expectations, performance feedback, and provision of a patient brochure. A difference-in-difference analysis was used to compare the time trend before (admitted January 2016-June 2017) and after introduction of the intervention (July 2017-December 2018) between intervention and control hospitals. Primary outcome was the monthly percentage of patients receiving a MRI or knee arthroscopy, weighted by type of hospital. RESULTS: 136,446 patients were included, of whom 32,163 were treated in the intervention hospitals. The weighted percentage of patients receiving a MRI on average declined by 0.15% per month (ß = - 0.15, P < 0.001) and by 0.19% per month for arthroscopy (ß = - 0.19, P < 0.001). However, these changes over time did not differ between intervention and control hospitals, neither for MRI (ß = - 0.74, P = 0.228) nor arthroscopy (ß = 0.13, P = 0.688). CONCLUSIONS: The extent to which patients ≥ 50 years with degenerative knee disease received a MRI or arthroscopy declined significantly over time, but could not be attributed to the tailored intervention. This secular downward time trend may reflect anoverall focus of reducing low value care in The Netherlands. LEVEL OF EVIDENCE: III.


Asunto(s)
Artroscopía , Traumatismos de la Rodilla , Humanos , Articulación de la Rodilla/diagnóstico por imagen , Rodilla , Traumatismos de la Rodilla/cirugía , Imagen por Resonancia Magnética
3.
Knee Surg Sports Traumatol Arthrosc ; 30(5): 1568-1574, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-34146116

RESUMEN

PURPOSE: The purpose of this study was to assess in which proportion of patients with degenerative knee disease aged 50+ in whom a knee arthroscopy is performed, no valid surgical indication is reported in medical records, and to explore possible explanatory factors. METHODS: A retrospective study was conducted using administrative data from January to December 2016 in 13 orthopedic centers in the Netherlands. Medical records were selected from a random sample of 538 patients aged 50+ with degenerative knee disease in whom arthroscopy was performed, and reviewed on reported indications for the performed knee arthroscopy. Valid surgical indications were predefined based on clinical national guidelines and expert opinion (e.g., truly locked knee). A knee arthroscopy without a reported valid indication was considered potentially low value care. Multivariate logistic regression analysis was performed to assess whether age, diagnosis ("Arthrosis" versus "Meniscal lesion"), and type of care trajectory (initial or follow-up) were associated with performing a potentially low value knee arthroscopy. RESULTS: Of 26,991 patients with degenerative knee disease, 2556 (9.5%) underwent an arthroscopy in one of the participating orthopedic centers. Of 538 patients in whom an arthroscopy was performed, 65.1% had a valid indication reported in the medical record and 34.9% without a reported valid indication. From the patients without a valid indication, a joint patient-provider decision or patient request was reported as the main reason. Neither age [OR 1.013 (95% CI 0.984-1.043)], diagnosis [OR 0.998 (95% CI 0.886-1.124)] or type of care trajectory [OR 0.989 (95% CI 0.948-1.032)] were significantly associated with performing a potentially low value knee arthroscopy. CONCLUSIONS: In a random sample of knee arthroscopies performed in 13 orthopedic centers in 2016, 65% had valid indications reported in the medical records but 35% were performed without a reported valid indication and, therefore, potentially low value care. Patient and/or surgeons preference may play a large role in the decision to perform an arthroscopy without a valid indication. Therefore, interventions should be developed to increase adherence to clinical guidelines by surgeons that target invalid indications for a knee arthroscopy to improve care. LEVEL OF EVIDENCE: IV.


Asunto(s)
Artroscopía , Lesiones de Menisco Tibial , Humanos , Articulación de la Rodilla/cirugía , Atención de Bajo Valor , Estudios Retrospectivos
4.
Osteoarthritis Cartilage ; 29(7): 1071-1080, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33848681

RESUMEN

OBJECTIVE: Osteoarthritis (OA) is a chronic joint disease characterized by progressive degradation of cartilage. It affects more than 10% of the people aged over 60 years-old worldwide with a rising prevalence due to the increasingly aging population. OA is a major source of pain, disability, and socioeconomic cost. Currently, the lack of effective diagnosis and affordable imaging options for early detection and monitoring of OA presents the clinic with many challenges. Spectroscopic Photoacoustic (sPA) imaging has the potential to reveal changes in cartilage composition with different degrees of damage, based on optical absorption contrast. DESIGN: In this study, the capabilities of sPA imaging and its potential to characterize cartilage damage were explored. To this end, 15 pieces of cartilage samples from patients undergoing a total joint replacement were collected and were imaged ex vivo with sPA imaging at a wide optical spectral range (between 500 nm and 1,300 nm) to investigate the photoacoustic properties of cartilage tissue. All the PA spectra of the cartilage samples were analyzed and compared to the corresponding histological results. RESULTS: The collagen related PA spectral changes were clearly visible in our imaging data and were related to different degrees of cartilage damage. The results are in good agreement with histology and the current gold standard, i.e., the Mankin score. CONCLUSIONS: This study demonstrates the potential and possible clinical application of sPA imaging in OA.


Asunto(s)
Cartílago Articular/patología , Técnicas Fotoacústicas , Análisis Espectral , Anciano , Anciano de 80 o más Años , Artroplastia de Reemplazo de Rodilla , Femenino , Humanos , Articulación de la Rodilla/patología , Masculino , Persona de Mediana Edad
5.
Knee Surg Sports Traumatol Arthrosc ; 28(8): 2502-2510, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31879792

RESUMEN

PURPOSE: Fear of movement (kinesiophobia) is a major limiting factor in the return to pre-injury sport level after anterior cruciate ligament reconstruction (ACLR). The aim of this study was to gain insight into the prevalence of kinesiophobia pre-ACLR, 3 months post-ACLR and 12 months post-ACLR. Furthermore, the preoperative predictability of kinesiophobia at 3 months post-ACLR was addressed. METHODS: A retrospective study with data, which were prospectively collected as part of standard care, was conducted to evaluate patients who underwent ACLR between January 2017 and December 2018 in an orthopaedic outpatient clinic. Patient characteristics (age, sex, body mass index), injury-to-surgery time, preoperative pain level (KOOS pain subscale) and preoperative knee function (IKDC-2000) were used as potential predictor variables for kinesiophobia (TSK-17) at 3 months post-ACLR in linear regression analysis. RESULTS: The number of patients with a high level of kinesiophobia (TSK > 37) reduced from 92 patients (69.2%) preoperatively to 44 patients (43.1%) 3 months postoperatively and 36 patients (30.8%) 12 months postoperatively. The prediction model, based on a multivariable regression analysis, showed a positive correlation between four predictor variables (prolonged injury-to-surgery time, high preoperative pain level, male sex and low body mass index) and a high level of kinesiophobia at 3 months postoperatively (R2 = 0.384, p = 0.02). CONCLUSION: The prevalence of kinesiophobia decreases during postoperative rehabilitation, but high kinesiophobia is still present in a large portion of the patients after ACLR. Timing of reconstruction seems to be the strongest predictor for high kinesiophobia 3 months post-ACLR. This study is the first step in the development of a screening tool to detect patients with kinesiophobia after ACLR. Identifying patients preoperatively opens the possibility to treat patients and thereby potentially increase the return to pre-injury sport level rate after ACLR. LEVEL OF EVIDENCE: III.


Asunto(s)
Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/psicología , Artralgia/psicología , Traumatismos en Atletas/cirugía , Miedo , Volver al Deporte/psicología , Tiempo de Tratamiento , Adulto , Lesiones del Ligamento Cruzado Anterior/fisiopatología , Lesiones del Ligamento Cruzado Anterior/psicología , Reconstrucción del Ligamento Cruzado Anterior/rehabilitación , Traumatismos en Atletas/fisiopatología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Movimiento , Complicaciones Posoperatorias/psicología , Periodo Preoperatorio , Estudios Retrospectivos , Adulto Joven
6.
Knee Surg Sports Traumatol Arthrosc ; 28(10): 3101-3117, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31555844

RESUMEN

PURPOSE: The purpose of this study was to assess which factors were associated with the implementation of "Choosing Wisely" recommendations to refrain from routine MRI and arthroscopy use in degenerative knee disease. METHODS: Cross-sectional surveys were sent to 123 patients (response rate 95%) and 413 orthopaedic surgeons (response rate 62%) fulfilling the inclusion criteria. Univariate and multivariate logistic regression analyses were used to identify factors associated with implementation of "Choosing Wisely" recommendations. RESULTS: Factors reducing implementation of the MRI recommendation among patients included explanation of added value by an orthopaedic surgeon [OR 0.18 (95% CI 0.07-0.47)] and patient preference for MRI [OR 0.27 (95% CI 0.08-0.92)]. Factors reducing implementation among orthopaedic surgeons were higher valuation of own MRI experience than existing evidence [OR 0.41 (95% CI 0.19-0.88)] and higher estimated patients' knowledge to participate in shared decision-making [OR 0.38 (95% CI 0.17-0.88)]. Factors reducing implementation of the arthroscopy recommendation among patients were orthopaedic surgeons' preferences for an arthroscopy [OR 0.03 (95% CI 0.00-0.22)] and positive experiences with arthroscopy of friends/family [OR 0.03 (95% CI 0.00-0.39)]. Factors reducing implementation among orthopaedic surgeons were higher valuation of own arthroscopy experience than existing evidence [OR 0.17 (95% CI 0.07-0.46)] and belief in the added value [OR 0.28 (95% CI 0.10-0.81)]. CONCLUSIONS: Implementation of "Choosing Wisely" recommendations in degenerative knee disease can be improved by strategies to change clinician beliefs about the added value of MRIs and arthroscopies, and by patient-directed strategies addressing patient preferences and underlying beliefs for added value of MRI and arthroscopies resulting from experiences of people in their environment. LEVEL OF EVIDENCE: IV.


Asunto(s)
Artroscopía/psicología , Articulación de la Rodilla/diagnóstico por imagen , Imagen por Resonancia Magnética/psicología , Cirujanos Ortopédicos/psicología , Procedimientos Innecesarios/psicología , Anciano , Estudios Transversales , Femenino , Adhesión a Directriz , Humanos , Articulación de la Rodilla/cirugía , Masculino , Persona de Mediana Edad , Prioridad del Paciente
7.
Phys Rev Lett ; 123(19): 193001, 2019 Nov 08.
Artículo en Inglés | MEDLINE | ID: mdl-31765203

RESUMEN

We investigate K-shell ionization of N_{2} at 40 keV photon energy. Using a cold target recoil ion momentum spectroscopy reaction microscope, we determine the vector momenta of the photoelectron, the Auger electron, and both N^{+} fragments. These fully differential data show that the dissociation process of the N_{2}^{2+} ion is significantly modified not only by the recoil momentum of the photoelectron but also by the photon momentum and the momentum of the emitted Auger electron. We find that the recoil energy introduced by the photon and the photoelectron momentum is partitioned with a ratio of approximately 30∶70 between the Auger electron and fragment ion kinetic energies, respectively. We also observe that the photon momentum induces an additional rotation of the molecular ion.

8.
Phys Rev Lett ; 123(24): 243201, 2019 Dec 13.
Artículo en Inglés | MEDLINE | ID: mdl-31922823

RESUMEN

We investigate angular emission distributions of the 1s photoelectrons of N_{2} ionized by linearly polarized synchrotron radiation at hν=40 keV. As expected, nondipole contributions cause a very strong forward-backward asymmetry in the measured emission distributions. In addition, we observe an unexpected asymmetry with respect to the polarization direction, which depends on the direction of the molecular fragmentation. In particular, photoelectrons are predominantly emitted in the direction of the forward nitrogen atom. This observation cannot be explained via asymmetries introduced by the initial bound and final continuum electronic states of the oriented molecule. The present simulations assign this asymmetry to a novel nontrivial effect of the recoil imposed to the nuclei by the fast photoelectrons and high-energy photons, which results in a propensity for the ions to break up along the axis of the recoil momentum. The results are of particular importance for the interpretation of future experiments at x-ray free electron lasers operating in the few tens of keV regime, where such nondipole and recoil effects will be essential.

9.
Knee Surg Sports Traumatol Arthrosc ; 27(6): 1965-1973, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28929208

RESUMEN

PURPOSE: The aim of this systematic review was to present an evidence-based overview of psychometric properties of patient-reported outcome measures (PROMs) for children with knee ligament injury. METHODS: A systematic search of literature was performed in PubMed, EMBASE and Cochrane databases. The inclusion criteria were diagnostic studies evaluating psychometric properties (validity, reliability, responsiveness) and comprehensibility of PROMs as well as studies including children (age < 18 years) with knee ligament injury. The systematic review was performed following the PRISMA statement. RESULTS: Ten studies were included. Eight studies evaluated psychometric properties of PROMs, and two studies analysed comprehensibility of PROMs. The Pedi-IKDC has been evaluated in four studies and has acceptable psychometric properties. The KOOS-Child is evaluated in one study and has acceptable psychometric properties. The use of adult PROMs in children causes problems in comprehensibility. CONCLUSION: The Pedi-IKDC is an adequate PROM for children with knee ligament injuries. It is valid, reliable and responsive. The KOOS-Child might be an alternative PROM for the Pedi-IKDC, but has only been evaluated in one study. The clinical relevance of the present systematic review is that adult versions of PROMs are not recommended in children and adolescents. LEVEL OF EVIDENCE: III.


Asunto(s)
Traumatismos de la Rodilla/diagnóstico , Ligamentos Articulares/lesiones , Medición de Resultados Informados por el Paciente , Psicometría/métodos , Adulto , Niño , Humanos , Traumatismos de la Rodilla/fisiopatología , Rango del Movimiento Articular , Reproducibilidad de los Resultados , Encuestas y Cuestionarios
10.
Knee Surg Sports Traumatol Arthrosc ; 27(9): 2898-2909, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29128879

RESUMEN

PURPOSE: The Osteoarthritis Research Society International has identified a core set of performance-based tests of physical function for use in people with knee osteoarthritis (OA). The core set consists of the 30-second chair stand test (30-s CST), 4 × 10 m fast-paced walk test (40 m FPWT) and a stair climb test. The aim of this study was to evaluate the reliability, validity and responsiveness of these performance-based measures to assess the ability to measure physical function in knee OA patients. METHODS: A prospective cohort study of 85 knee OA patients indicated for total knee arthroplasty (TKA) was performed. Construct validity and responsiveness were assessed by testing of predefined hypotheses. A subgroup (n = 30) underwent test-retest measurements for reliability analysis. The Oxford Knee Score, Knee injury and Osteoarthritis Outcome Score-Physical Function Short Form, pain during activity score and knee extensor strength were used as comparator instruments. Measurements were obtained at baseline and 12 months after TKA. RESULTS: Appropriate test-retest reliability was found for all three tests. Intraclass correlation coefficient (ICC) for the 30-s CST was 0.90 (95% CI 0.68; 0.96), 40 m FPWT 0.93 (0.85; 0.96) and for the 10-step stair climb test (10-step SCT) 0.94 (0.89; 0.97). Adequate construct validity could not be confirmed for the three tests. For the 30-s CST, 42% of the predefined hypotheses were confirmed; for the 40 m FPWT, 27% and for the 10-step SCT 36% were confirmed. The 40 m FPWT was found to be responsive with 75% of predefined hypothesis confirmed, whereas the responsiveness for the other tests could not be confirmed. For the 30 s CST and 10-step SCT, only 50% of hypotheses were confirmed. CONCLUSIONS: The three performance-based tests had good reliability, but poor construct validity and responsiveness in the assessment of function for the domains sit-to-stand movement, walking short distances and stair negotiation. The findings of the present study do not justify their use for clinical practice. LEVEL OF EVIDENCE: Level 1. Diagnostic study.


Asunto(s)
Artroplastia de Reemplazo de Rodilla/normas , Articulación de la Rodilla/fisiopatología , Osteoartritis de la Rodilla/diagnóstico , Anciano , Prueba de Esfuerzo , Femenino , Estudios de Seguimiento , Humanos , Articulación de la Rodilla/cirugía , Masculino , Persona de Mediana Edad , Osteoartritis de la Rodilla/cirugía , Dolor/cirugía , Dimensión del Dolor , Periodo Preoperatorio , Estudios Prospectivos , Rango del Movimiento Articular , Reproducibilidad de los Resultados , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Factores de Tiempo , Prueba de Paso , Caminata
11.
Tijdschr Psychiatr ; 61(5): 305-316, 2019.
Artículo en Holandés | MEDLINE | ID: mdl-31180569

RESUMEN

BACKGROUND: Severe mental illnesses (SMI) are associated with high mental healthcare and other healthcare costs. In 2012, mental healthcare labels were developed to create more transparency between insurance companies, municipalities, and mental healthcare. The labels are based on care intensity, and should provide a regional overview of the present groups of patients with SMI.
AIM: Explore the functionality and validity of the used labels in relation to needs for care and psychosocial functioning.
METHOD: The ROM data (needs for care, functioning) from 706 patients were tested per label by Chi-square tests and ANOVAs. For two high complex labels (alarming care avoiders and persons with safety risks), repeated measures ANOVAs and McNemar tests were used to analyse changes in functioning and needs over time.
RESULTS: To a limited extent, the labels were distinctive in care needs and functioning. The most restrictions in functioning and (unfulfilled) needs were present in the labels 'alarming care avoiders' and 'avoiding danger'. These findings were stable over time.
CONCLUSION: The labels are not sufficiently distinctive. To enhance regional care planning, it is desirable to combine existing information on healthcare labels with information on care needs and functioning. KEY WORDS functioning, mental healthcare labels, needs for care, routine outcome monitoring, severe mental illness.


Asunto(s)
Necesidades y Demandas de Servicios de Salud , Reembolso de Seguro de Salud , Trastornos Mentales/clasificación , Humanos , Escalas de Valoración Psiquiátrica
12.
Radiologe ; 58(11): 996-1003, 2018 Nov.
Artículo en Alemán | MEDLINE | ID: mdl-30105535

RESUMEN

An overview about the normal anatomy and frequent pathologies of tendons and ligaments of the elbow using MRI will be provided. The unique joint configuration and articulation, as well as passive ligamentous and active muscle structures as well as the unique configuration of the articulating components of the elbow contribute to joint stabilization. MRI is an essential imaging modality in patients with ligamentous injuries including the sequelae of joint dislocation as well as chronic pathologies such as long-standing and refractory tendinopathies. Ideally, when reporting MRI of the elbow, the joint is separated into its four compartments, anterior, posterior, medial and lateral, allowing precise, comprehensive and structured reporting.


Asunto(s)
Articulación del Codo , Codo/diagnóstico por imagen , Ligamentos Articulares/diagnóstico por imagen , Traumatismos de los Tendones , Humanos , Ligamentos , Imagen por Resonancia Magnética
13.
Phys Chem Chem Phys ; 18(34): 23663-72, 2016 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-27510767

RESUMEN

We have investigated the ferroelectric polarization switching properties of trialkylbenzene-1,3,5-tricarboxamide (BTA), which is a model system for a large class of novel organic ferroelectric materials. In the solid state BTAs form a liquid crystalline columnar hexagonal phase that provides long range order that was previously shown to give rise to hysteretic dipolar switching. In this work the nature of the polar switching process is investigated by a combination of dielectric relaxation spectroscopy, depth-resolved pyroelectric response measurements, and classical frequency- and time-dependent electrical switching. We show that BTAs, when brought in a homeotropically aligned hexagonal liquid crystalline phase, are truly ferroelectric. Analysis of the transient switching behavior suggests that the ferroelectric switching is limited by a highly dispersive nucleation process, giving rise to a wide distribution of switching times.

14.
Tijdschr Psychiatr ; 58(10): 683-687, 2016.
Artículo en Holandés | MEDLINE | ID: mdl-27779283

RESUMEN

BACKGROUND: After a decade of robust growth in spending, Dutch mental healthcare is on a more stricter budgetary path since 2012. High prevalence of illness and limited spending, imply the need for efficient mental healthcare delivery.
AIM: To advise how mental health care can be managed more efficiently. There will also have to be more differentiation between mild and serious psychiatric illnesses.
METHOD: Review of academic articles and policy studies.
RESULTS: With regard to the treatment of fairly common disorders, more attention needs to be given to integrated basic care and e-health. Employers and stakeholders can perhaps play a role in financing some of these services. Severe mental disorders can be handled more often on an integrated ambulatory basis setting than only in a hospital setting, while scaling down inpatient capacity. These steps would represent a major transition and would require spending cuts and a change in the provider 'landscape'.
CONCLUSION: Sustainable mental healthcare is inseparably linked to an agenda that provides value for money and it implies a major transition. However, in principle, it should be possible to fit these changes into the current system of governance. More attention needs to be given to coordination between the various domains, and to a reduction in administrative costs. Reimbursement methods should align e-health, collaborative care, case-management and best-practice pathways.


Asunto(s)
Costos de la Atención en Salud , Política de Salud , Servicios de Salud Mental/economía , Servicios de Salud Mental/legislación & jurisprudencia , Presupuestos , Análisis Costo-Beneficio , Humanos , Trastornos Mentales/terapia , Salud Mental , Servicios de Salud Mental/normas , Países Bajos
15.
Neuroimage ; 119: 398-405, 2015 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-26163800

RESUMEN

The striatum is involved in many different aspects of behaviour, reflected by the variety of cortical areas that provide input to this structure. This input is topographically organized and is likely to result in functionally specific signals. Such specificity can be examined using functional clustering approaches. Here, we propose a Bayesian model-based functional clustering approach applied solely to resting state striatal functional MRI timecourses to identify intrinsic striatal functional modules. Data from two sets of ten participants were used to obtain parcellations and examine their robustness. This stable clustering was used to initialize a more constrained model in order to obtain individualized parcellations in 57 additional participants. Resulting cluster time courses were used to examine functional connectivity between clusters and related to the rest of the brain in a GLM analysis. We find six distinct clusters in each hemisphere, with clear inter-hemispheric correspondence and functional relevance. These clusters exhibit functional connectivity profiles that further underscore their homologous nature and are consistent with existing notions on segregation and integration in parallel cortico-basal ganglia loops. Our findings suggest that multiple territories within both the affective and motor regions can be distinguished solely using resting state functional MRI from these regions.


Asunto(s)
Mapeo Encefálico/métodos , Cuerpo Estriado/anatomía & histología , Cuerpo Estriado/fisiología , Imagen por Resonancia Magnética/métodos , Teorema de Bayes , Análisis por Conglomerados , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Modelos Estadísticos
16.
Eur J Clin Microbiol Infect Dis ; 34(5): 943-50, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25577174

RESUMEN

Genes involved in human immune response are well recognized to influence the clinical course of infection. The association of host genetics with susceptibility to and severity of clinical symptoms in acute Q fever was investigated. Single nucleotide polymorphisms (SNPs) in the IFNG (rs2430561/rs1861493), STAT1 (rs1914408), and VDR (rs2228570) genes were determined in 85 patients from the 2007 Dutch acute Q fever outbreak, and a symptom score was calculated. IFNG rs1861493 showed a significant association with the symptom score; IFNG rs2430561 showed a similar trend. These SNPs were then used to reproduce results in a 2009 outbreak population (n = 123). The median symptom score differed significantly in both populations: 2 versus 7. The significant association of IFNG rs1861493 with symptom score in the first population was not reproduced in the second population. We hypothesize that individuals in the second outbreak were exposed to a higher Coxiella burnetii dose compared to the first, which overruled the protection conferred by the A-allele of IFNG rs1861493 in the first population.


Asunto(s)
Coxiella/inmunología , Interferón gamma/genética , Polimorfismo de Nucleótido Simple , Fiebre Q/genética , Fiebre Q/patología , Receptores de Calcitriol/genética , Factor de Transcripción STAT1/genética , Adulto , Animales , Estudios de Casos y Controles , Brotes de Enfermedades , Femenino , Genes MHC Clase II , Predisposición Genética a la Enfermedad , Humanos , Masculino , Persona de Mediana Edad , Países Bajos/epidemiología , Fiebre Q/epidemiología , Fiebre Q/inmunología , Índice de Severidad de la Enfermedad
17.
Clin Exp Allergy ; 44(2): 231-7, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24447085

RESUMEN

BACKGROUND: Between 75 000 and 125 000 U.S. infants are hospitalized for respiratory syncytial virus (RSV) bronchiolitis every year. Up to half will be diagnosed with asthma in later childhood. Vitamin D deficiency has been associated with susceptibility to asthma and respiratory infections. Measured vitamin D is largely bound to vitamin D-binding protein (VDBP); VDBP levels are influenced by its gene (GC) haplotype. OBJECTIVE: We assessed the relationship between polymorphisms rs7041 and rs4588, which define haplotypes GC1s, GC1f, and GC2, and RSV bronchiolitis susceptibility and subsequent asthma. METHODS: We retrospectively recruited 198 otherwise healthy children (93% White) hospitalized for severe RSV bronchiolitis in Boston and 333 parents into a follow-up study to assess asthma diagnosis. Data were analysed using family-based genetic association tests. We independently validated our results in 465 White children hospitalized with RSV bronchiolitis and 930 White population controls from the Netherlands. RESULTS: The rs7041_C allele (denoting haplotype GC1s) was overtransmitted (P = 0.02, additive model) in the entire Boston cohort, in Whites (P = 0.03), and especially in children subsequently diagnosed with asthma (P = 0.006). The GC1f haplotype was undertransmitted in the asthma subgroups (all races and White, both P < 0.05). The rs7041_C allele was also more frequent in the RSV bronchiolitis group compared with controls (OR 1.12, 95% CI 1.02, 1.4, P = 0.03) in the Netherlands, especially in mechanically ventilated patients (P = 0.009). CONCLUSION AND CLINICAL RELEVANCE: GC1s haplotype carriage may increase the risk of RSV bronchiolitis in infancy and subsequent asthma development. The GC1s haplotype is associated with higher VDBP levels, resulting in less freely available vitamin D. KEY MESSAGES: Vitamin D-binding protein (VDBP) haplotypes influence free vitamin D levels. We report an association between a VDBP haplotype and hospitalization for RSV bronchiolitis in infancy in two independent cohorts.


Asunto(s)
Bronquiolitis Viral/genética , Haplotipos , Polimorfismo de Nucleótido Simple , Infecciones por Virus Sincitial Respiratorio/genética , Virus Sincitial Respiratorio Humano , Proteína de Unión a Vitamina D/genética , Bronquiolitis Viral/sangre , Bronquiolitis Viral/epidemiología , Bronquiolitis Viral/terapia , Preescolar , Femenino , Estudios de Seguimiento , Hospitalización , Humanos , Lactante , Masculino , Infecciones por Virus Sincitial Respiratorio/sangre , Infecciones por Virus Sincitial Respiratorio/epidemiología , Infecciones por Virus Sincitial Respiratorio/terapia , Estudios Retrospectivos , Vitamina D/sangre , Proteína de Unión a Vitamina D/sangre
18.
Int J Qual Health Care ; 26(1): 58-63, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24257163

RESUMEN

OBJECTIVE: Many studies have investigated the effect of redesign on operational performance; fewer studies have evaluated the effects on employees' perceptions of their working environment (organizational climate). Some authors state that redesign will lead to poorer organizational climate, while others state the opposite. The goal of this study was to empirically investigate this relation. DESIGN: Organizational climate was measured in a field experiment, before and after a redesign intervention. At one of the sites, a redesign project was conducted. At the other site, no redesign efforts took place. SETTING: Two Dutch child- and adolescent-mental healthcare providers. PARTICIPANTS: Professionals that worked at one of the units at the start and/or the end of the intervention period. INTERVENTION: The main intervention was a redesign project aimed at improving timely delivery of services (modeled after the breakthrough series). MAIN OUTCOME MEASURES: Scores on the four models of the organizational climate measure, a validated questionnaire that measures organizational climate. RESULTS: Our analysis showed that climate at the intervention site changed on factors related to productivity and goal achievement (rational goal model). The intervention group scored worse than the comparison group on the part of the questionnaire that focuses on sociotechnical elements of organizational climate. However, observed differences were so small, that their practical relevance seems rather limited. CONCLUSIONS: Redesign efforts in healthcare, so it seems, do not influence organizational climate as much as expected.


Asunto(s)
Servicios de Salud Mental/organización & administración , Cultura Organizacional , Adolescente , Actitud del Personal de Salud , Niño , Humanos , Países Bajos , Innovación Organizacional , Encuestas y Cuestionarios
19.
J Intellect Disabil Res ; 57(8): 689-702, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22463729

RESUMEN

BACKGROUND: People with intellectual disabilities (ID) have an increased vulnerability to develop psychiatric problems. Moreover, the early recognition and the accurate diagnosis of psychiatric disorders in the population of persons with ID are challenging. METHOD: A Dutch version of the Mini PAS-ADD, which is a screening instrument for identification of mental health problems in people with ID, was evaluated in terms of internal consistency, interinformant reliability, item grouping and criterion validity based on a large-scale random sample (n = 377) and a clinical sample (n = 99) of adults with ID. RESULTS: The Dutch version of the Mini PAS-ADD showed moderate internal consistency, and moderate concordance among informants. Both aspects of the reliability were comparable for different levels of ID. A factor analysis largely confirmed the scale structure. Concurrent validity with the Reiss Screen for Maladaptive Behavior was high for the Depression, Psychosis and Autism scale. The outcome of the criterion-validity analysis indicated high specificity. The sensitivity for specific psychiatric disorders by the corresponding scales was moderate, but the general sensitivity for the presence of psychopathology on the basis of any of the scales was satisfying. CONCLUSIONS: The present research reconfirmed the use of the Mini PAS-ADD as a primary screening device for the identification of mental health problems among people with ID.


Asunto(s)
Comparación Transcultural , Discapacidad Intelectual/diagnóstico , Discapacidad Intelectual/psicología , Trastornos Mentales/diagnóstico , Trastornos Mentales/psicología , Escalas de Valoración Psiquiátrica/estadística & datos numéricos , Psicometría/estadística & datos numéricos , Adulto , Anciano , Bélgica , Comorbilidad , Estudios Transversales , Femenino , Humanos , Discapacidad Intelectual/epidemiología , Masculino , Tamizaje Masivo/estadística & datos numéricos , Trastornos Mentales/epidemiología , Persona de Mediana Edad , Valores de Referencia , Reproducibilidad de los Resultados , Traducción , Adulto Joven
20.
J Environ Manage ; 127 Suppl: S6-S14, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23137917

RESUMEN

Regional adaptation strategies are plans that consist of feasible measures to shift a region towards a system that is flexible and robust for future climate changes. They apply to regional impacts of climate change and are imbedded in broader planning. Multiple adaptation frameworks and guidelines exist that describe the development stages of regional adaptation strategies. Spatial information plays a key role in the design of adaptation measures as both the effects of climate change as well as many adaptation measures have spatial impacts. Interactive spatial support tools such as drawing, simulation and evaluation tools can assist the development process. This paper presents how to connect tasks derived from the actual development stages to spatial support tools in an interactive multi-stakeholder context. This link helps to decide what spatial tools are suited to support which stages in the development process of regional adaptation strategies. The practical implication of the link is illustrated for three case study workshops in the Netherlands. The regional planning workshops combine expertise from both scientists and stakeholders with an interactive mapping device. This approach triggered participants to share their expertise and stimulated integration of knowledge.


Asunto(s)
Conservación de los Recursos Naturales/métodos , Cambio Climático , Países Bajos
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